www.duolingo.com Open in urlscan Pro
3.85.58.25 Public Scan

Go To Rescan
Add Verdict Report

URL:
https://www.duolingo.com/efficacy
Submission: On March 22 via api (March 22nd 2022, 6:56:29 pm UTC) from BE — Scanned from DE

Summary HTTP 83 Redirects Links 10 Behaviour Indicators

Summary

This website contacted 24 IPs in 4 countries across 19 domains to perform 83 HTTP transactions. The main IP is 3.85.58.25, located in Ashburn, United States and belongs to AMAZON-AES, US. The main domain is www.duolingo.com. The Cisco Umbrella rank of the primary domain is 18717.
TLS certificate: Issued by Go Daddy Secure Certificate Authority... on November 21st 2021. Valid for: a year.

This is the only time www.duolingo.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
4	3.85.58.25 3.85.58.25	14618 (AMAZON-AES) (AMAZON-AES)
5	2606:4700::68... 2606:4700::6810:9440	13335 (CLOUDFLAR...) (CLOUDFLARENET)
11	52.212.133.238 52.212.133.238	16509 (AMAZON-02) (AMAZON-02)
24	2600:9000:249... 2600:9000:2490:c000:7:60cd:e840:21	16509 (AMAZON-02) (AMAZON-02)
1	2606:4700:10:... 2606:4700:10::6814:b844	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	2a00:1450:400... 2a00:1450:4001:82f::2008	15169 (GOOGLE) (GOOGLE)
6	44.193.53.124 44.193.53.124	14618 (AMAZON-AES) (AMAZON-AES)
1	18.215.194.130 18.215.194.130	14618 (AMAZON-AES) (AMAZON-AES)
1	18.66.139.123 18.66.139.123	16509 (AMAZON-02) (AMAZON-02)
2	2a00:1450:400... 2a00:1450:4001:808::200e	15169 (GOOGLE) (GOOGLE)
1 3	142.250.185.230 142.250.185.230	15169 (GOOGLE) (GOOGLE)
2	142.250.185.162 142.250.185.162	15169 (GOOGLE) (GOOGLE)
4	2a03:2880:f02... 2a03:2880:f02d:100:face:b00c:0:3	32934 (FACEBOOK) (FACEBOOK)
2	63.35.104.241 63.35.104.241	16509 (AMAZON-02) (AMAZON-02)
1 1	18.66.122.77 18.66.122.77	16509 (AMAZON-02) (AMAZON-02)
1 2	52.31.156.128 52.31.156.128	16509 (AMAZON-02) (AMAZON-02)
1	2a00:1450:400... 2a00:1450:400c:c06::9b	15169 (GOOGLE) (GOOGLE)
1 2	2a00:1450:400... 2a00:1450:4001:80f::2002	15169 (GOOGLE) (GOOGLE)
1 2	2a00:1450:400... 2a00:1450:4001:812::2004	15169 (GOOGLE) (GOOGLE)
2	2a00:1450:400... 2a00:1450:4001:831::2003	15169 (GOOGLE) (GOOGLE)
3	2a03:2880:f12... 2a03:2880:f12d:181:face:b00c:0:25de	32934 (FACEBOOK) (FACEBOOK)
1 1	2a00:1450:400... 2a00:1450:4001:827::2002	15169 (GOOGLE) (GOOGLE)
1	15.197.193.217 15.197.193.217	16509 (AMAZON-02) (AMAZON-02)
2	2a02:26f0:fb:... 2a02:26f0:fb:595::1931	20940 (AKAMAI-ASN1) (AKAMAI-ASN1)
2	2.21.141.169 2.21.141.169	16625 (AKAMAI-AS) (AKAMAI-AS)
83	24

4 3.85.58.25 (Ashburn, United States)

ASN14618 (AMAZON-AES, US)
PTR: ec2-3-85-58-25.compute-1.amazonaws.com

www.duolingo.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
stories.duolingo.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

5 2606:4700::6810:9440 (United States)

ASN13335 (CLOUDFLARENET, US)

cdn.cookielaw.org	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

11 52.212.133.238 (Dublin, Ireland)

ASN16509 (AMAZON-02, US)
PTR: ec2-52-212-133-238.eu-west-1.compute.amazonaws.com

s.lmepbq.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

24 2600:9000:2490:c000:7:60cd:e840:21 (United States)

ASN16509 (AMAZON-02, US)

d35aaqx5ub95lt.cloudfront.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2606:4700:10::6814:b844 (United States)

ASN13335 (CLOUDFLARENET, US)

geolocation.onetrust.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:82f::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.googletagmanager.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

6 44.193.53.124 (Ashburn, United States)

ASN14618 (AMAZON-AES, US)
PTR: ec2-44-193-53-124.compute-1.amazonaws.com

excess.duolingo.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 18.215.194.130 (Ashburn, United States)

ASN14618 (AMAZON-AES, US)
PTR: ec2-18-215-194-130.compute-1.amazonaws.com

stories.duolingo.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 18.66.139.123 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-18-66-139-123.fra60.r.cloudfront.net

brb.duolingo.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:808::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 142.250.185.230 (United States) 1 redirects

ASN15169 (GOOGLE, US)
PTR: fra16s53-in-f6.1e100.net

9814127.fls.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 142.250.185.162 (United States)

ASN15169 (GOOGLE, US)
PTR: fra16s51-in-f2.1e100.net

www.googleadservices.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

4 2a03:2880:f02d:100:face:b00c:0:3 (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)

connect.facebook.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 63.35.104.241 (Dublin, Ireland)

ASN16509 (AMAZON-02, US)
PTR: ec2-63-35-104-241.eu-west-1.compute.amazonaws.com

c0.adalyser.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 18.66.122.77 (United States) 1 redirects

ASN16509 (AMAZON-02, US)
PTR: server-18-66-122-77.fra60.r.cloudfront.net

pixel.pointmediatracker.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 52.31.156.128 (Dublin, Ireland) 1 redirects

ASN16509 (AMAZON-02, US)
PTR: ec2-52-31-156-128.eu-west-1.compute.amazonaws.com

cnv.event.prod.bidr.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:400c:c06::9b (Brussels, Belgium)

ASN15169 (GOOGLE, US)

stats.g.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:80f::2002 (Frankfurt am Main, Germany) 1 redirects

ASN15169 (GOOGLE, US)

adservice.google.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools
googleads.g.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:812::2004 (Frankfurt am Main, Germany) 1 redirects

ASN15169 (GOOGLE, US)

www.google.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:831::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google.de	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2a03:2880:f12d:181:face:b00c:0:25de (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)

www.facebook.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:827::2002 (Frankfurt am Main, Germany) 1 redirects

ASN15169 (GOOGLE, US)

adservice.google.de	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 15.197.193.217 (United States)

ASN16509 (AMAZON-02, US)
PTR: a12b7a488abeaa9e4.awsglobalaccelerator.com

insight.adsrvr.org	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a02:26f0:fb:595::1931 (Frankfurt am Main, Germany)

ASN20940 (AKAMAI-ASN1, NL)

s.pinimg.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2.21.141.169 (Frankfurt am Main, Germany)

ASN16625 (AKAMAI-AS, US)
PTR: a2-21-141-169.deploy.static.akamaitechnologies.com

ct.pinterest.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
24	cloudfront.net d35aaqx5ub95lt.cloudfront.net	719 KB
12	duolingo.com www.duolingo.com — Cisco Umbrella Rank: 18717 excess.duolingo.com — Cisco Umbrella Rank: 13134 stories.duolingo.com — Cisco Umbrella Rank: 15886 brb.duolingo.com — Cisco Umbrella Rank: 13121	10 KB
11	lmepbq.com s.lmepbq.com — Cisco Umbrella Rank: 31831	53 KB
5	doubleclick.net 2 redirects 9814127.fls.doubleclick.net — Cisco Umbrella Rank: 59243 stats.g.doubleclick.net — Cisco Umbrella Rank: 68 googleads.g.doubleclick.net — Cisco Umbrella Rank: 38	4 KB
5	cookielaw.org cdn.cookielaw.org — Cisco Umbrella Rank: 450	116 KB
4	facebook.net connect.facebook.net — Cisco Umbrella Rank: 124	227 KB
3	facebook.com www.facebook.com — Cisco Umbrella Rank: 96	586 B
3	google.de 1 redirects www.google.de — Cisco Umbrella Rank: 6433 adservice.google.de — Cisco Umbrella Rank: 8832	1 KB
3	google.com 1 redirects adservice.google.com — Cisco Umbrella Rank: 57 www.google.com — Cisco Umbrella Rank: 2	2 KB
2	pinterest.com ct.pinterest.com — Cisco Umbrella Rank: 822	1 KB
2	pinimg.com s.pinimg.com — Cisco Umbrella Rank: 687	19 KB
2	bidr.io 1 redirects cnv.event.prod.bidr.io — Cisco Umbrella Rank: 9036	1 KB
2	adalyser.com c0.adalyser.com — Cisco Umbrella Rank: 24566	13 KB
2	googleadservices.com www.googleadservices.com — Cisco Umbrella Rank: 101	16 KB
2	google-analytics.com www.google-analytics.com — Cisco Umbrella Rank: 31	20 KB
1	adsrvr.org insight.adsrvr.org — Cisco Umbrella Rank: 567	261 B
1	pointmediatracker.com 1 redirects pixel.pointmediatracker.com — Cisco Umbrella Rank: 2852	638 B
1	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 54	57 KB
1	onetrust.com geolocation.onetrust.com — Cisco Umbrella Rank: 727	457 B
83	19

	Domain	Requested by
24	d35aaqx5ub95lt.cloudfront.net	www.duolingo.com d35aaqx5ub95lt.cloudfront.net
11	s.lmepbq.com	www.duolingo.com s.lmepbq.com d35aaqx5ub95lt.cloudfront.net
6	excess.duolingo.com	d35aaqx5ub95lt.cloudfront.net
5	cdn.cookielaw.org	www.duolingo.com cdn.cookielaw.org d35aaqx5ub95lt.cloudfront.net
4	connect.facebook.net	www.duolingo.com connect.facebook.net 9814127.fls.doubleclick.net
3	www.facebook.com	www.duolingo.com 9814127.fls.doubleclick.net
3	9814127.fls.doubleclick.net	1 redirects www.googletagmanager.com adservice.google.com
3	www.duolingo.com	d35aaqx5ub95lt.cloudfront.net
2	ct.pinterest.com	s.pinimg.com 9814127.fls.doubleclick.net
2	s.pinimg.com	9814127.fls.doubleclick.net s.pinimg.com
2	www.google.de	www.duolingo.com
2	www.google.com	1 redirects www.duolingo.com
2	cnv.event.prod.bidr.io	1 redirects www.duolingo.com
2	c0.adalyser.com	www.duolingo.com
2	www.googleadservices.com	www.googletagmanager.com www.googleadservices.com
2	www.google-analytics.com	www.googletagmanager.com d35aaqx5ub95lt.cloudfront.net
2	stories.duolingo.com	d35aaqx5ub95lt.cloudfront.net
1	insight.adsrvr.org	9814127.fls.doubleclick.net
1	adservice.google.de	1 redirects
1	googleads.g.doubleclick.net	1 redirects
1	adservice.google.com	9814127.fls.doubleclick.net
1	stats.g.doubleclick.net	d35aaqx5ub95lt.cloudfront.net
1	pixel.pointmediatracker.com	1 redirects
1	brb.duolingo.com	d35aaqx5ub95lt.cloudfront.net
1	www.googletagmanager.com	d35aaqx5ub95lt.cloudfront.net
1	geolocation.onetrust.com	cdn.cookielaw.org
83	26

This site contains links to these domains. Also see Links.

Domain
duolingo-papers.s3.amazonaws.com
blog.duolingo.com
careers.duolingo.com
investors.duolingo.com

Subject Issuer	Validity	Valid
*.duolingo.com Go Daddy Secure Certificate Authority - G2	`2021-11-21` - `2022-12-23`	a year	crt.sh
cookielaw.org Cloudflare Inc ECC CA-3	`2021-06-01` - `2022-05-31`	a year	crt.sh
lmepbq.com R3	`2022-03-04` - `2022-06-02`	3 months	crt.sh
*.cloudfront.net Amazon	`2022-02-01` - `2023-01-31`	a year	crt.sh
onetrust.com Cloudflare Inc ECC CA-3	`2022-01-12` - `2023-01-12`	a year	crt.sh
*.google-analytics.com GTS CA 1C3	`2022-02-28` - `2022-05-23`	3 months	crt.sh
*.doubleclick.net GTS CA 1C3	`2022-02-28` - `2022-05-23`	3 months	crt.sh
www.googleadservices.com GTS CA 1C3	`2022-02-28` - `2022-05-23`	3 months	crt.sh
*.facebook.com DigiCert SHA2 High Assurance Server CA	`2021-12-29` - `2022-03-29`	3 months	crt.sh
*.adalyser.com Thawte RSA CA 2018	`2021-06-11` - `2022-07-12`	a year	crt.sh
*.googleadservices.com GTS CA 1C3	`2022-02-28` - `2022-05-23`	3 months	crt.sh
*.g.doubleclick.net GTS CA 1C3	`2022-02-28` - `2022-05-23`	3 months	crt.sh
*.google.com GTS CA 1C3	`2022-03-17` - `2022-06-09`	3 months	crt.sh
www.google.com GTS CA 1C3	`2022-02-28` - `2022-05-23`	3 months	crt.sh
www.google.de GTS CA 1C3	`2022-03-17` - `2022-06-09`	3 months	crt.sh
*.adsrvr.org GlobalSign GCC R3 DV TLS CA 2020	`2021-03-18` - `2022-04-19`	a year	crt.sh
*.pinterest.com DigiCert TLS RSA SHA256 2020 CA1	`2021-07-26` - `2022-08-05`	a year	crt.sh

This page contains 5 frames:

Primary Page: https://www.duolingo.com/efficacy
Frame ID: 47AF5E9B993BBC8E5AA785F5E839DE8B
Requests: 65 HTTP requests in this frame

Frame: https://9814127.fls.doubleclick.net/activityi;dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy
Frame ID: 3AE8AF9D22142E16A36EB1E59837902C
Requests: 1 HTTP requests in this frame

Frame: blob://https://www.duolingo.com/19f3c08d-4918-4ccf-aa5f-03440a5945f6
Frame ID: 0CA98B4E677A311194D0B995F0B4B788
Requests: 1 HTTP requests in this frame

Frame: https://adservice.google.com/ddm/fls/i/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy
Frame ID: B2A9D097F04844A8B654C0CD3A4A6E18
Requests: 1 HTTP requests in this frame

Frame: https://9814127.fls.doubleclick.net/ddm/fls/r/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy
Frame ID: BC1545305D2276559DFFE9FBCF2DD60D
Requests: 10 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Duolingo

Detected technologies

React (JavaScript Frameworks) Expand

Overall confidence: 100%
Detected patterns

<[^>]+data-react

Facebook (Widgets) Expand

Overall confidence: 100%
Detected patterns

//connect\.facebook\.([a-z]+)/[^/]*/[a-z]*\.js

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

google-analytics\.com/(?:ga|urchin|analytics)\.js

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtm\.js

OneTrust (Cookie compliance) Expand

Overall confidence: 100%
Detected patterns

cdn\.cookielaw\.org
otSDKStub\.js

Page Statistics

83
Requests

94 %
HTTPS

52 %
IPv6

19
Domains

26
Subdomains

24
IPs

4
Countries

1257 kB
Transfer

3964 kB
Size

25
Cookies

10 Outgoing links

These are links going to different origins than the main page.

URL: https://duolingo-papers.s3.amazonaws.com/reports/duolingo-efficacy-whitepaper.pdf
Title: Vollständiger Bericht zur Studie

Search URL Search Domain Scan URL

URL: https://blog.duolingo.com/how-well-does-duolingo-work/
Title: Blogpost lesen

Search URL Search Domain Scan URL

URL: https://duolingo-papers.s3.amazonaws.com/reports/duolingo-intermediate-efficacy-whitepaper.pdf
Title: Vollständiger Bericht zur Studie

Search URL Search Domain Scan URL

URL: https://blog.duolingo.com/effective-intermediate-learning/
Title: Blogpost lesen

Search URL Search Domain Scan URL

URL: https://duolingo-papers.s3.amazonaws.com/reports/duolingo-speaking-whitepaper.pdf
Title: Bericht zur Studie

Search URL Search Domain Scan URL

URL: https://blog.duolingo.com/how-well-does-duolingo-teach-speaking-skills/
Title: Blogpost

Search URL Search Domain Scan URL

URL: https://blog.duolingo.com/the-nuts-and-bolts-of-course-creation-at-duolingo/
Title: Blogpost

Search URL Search Domain Scan URL

URL: https://blog.duolingo.com/doing-our-homework-checking-in-on-how-well-were-teaching/
Title: Blogpost

Search URL Search Domain Scan URL

URL: https://careers.duolingo.com/
Title: Karriere

Search URL Search Domain Scan URL

URL: https://investors.duolingo.com/
Title: INVESTOREN

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 46

https://9814127.fls.doubleclick.net/activityi;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy HTTP 302
https://9814127.fls.doubleclick.net/activityi;dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy

Request Chain 50

https://pixel.pointmediatracker.com/kpi?c=duolingo&kpi=visit&tag_id=111&fpc=f5ae6f1d-0aa6-4ea0-898e-f7eccd3b1de6&utm_source=undefined&utm_medium=undefined&utm_campaign=undefined&gtmcb=2079264373 HTTP 302
https://cnv.event.prod.bidr.io/log/cnv?tag_id=111&buzz_key=blisspoint&value=duolingo&segment_key=&order=b60e0dc0-82ef-4f54-bfd8-b2d58f19212b.null&ord=3521190465272145969 HTTP 303
https://cnv.event.prod.bidr.io/log/cnv?tag_id=111&buzz_key=blisspoint&value=duolingo&segment_key=&order=b60e0dc0-82ef-4f54-bfd8-b2d58f19212b.null&ord=3521190465272145969&_bee_ppp=1

Request Chain 61

https://googleads.g.doubleclick.net/pagead/viewthroughconversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_ah=1200&u_aw=1600&u_cd=24&u_his=2&u_tz=0&u_java=false&u_nplug=3&u_nmime=4&gtm=2wg3e0&sendb=1&ig=1&frm=0&url=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&tiba=Duolingo&auid=2009500855.1647975385&hn=www.googleadservices.com&async=1&fmt=3&ctc_id=CAIVAgAAAB0CAAAA&ct_cookie_present=false&ocp_id=2Bs6YqXhKJiPgAfxz7uoCw&sscte=1&crd=&eitems=ChEI8OflkQYQ3c3fr9aTwNyMARIdAEibTcjhG3hdQWo1nNLP7st1QgJI4TJltBqPy98 HTTP 302
https://www.google.com/pagead/1p-conversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_ah=1200&u_aw=1600&u_cd=24&u_his=2&u_tz=0&u_java=false&u_nplug=3&u_nmime=4&gtm=2wg3e0&sendb=1&ig=1&frm=0&url=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&tiba=Duolingo&auid=2009500855.1647975385&hn=www.googleadservices.com&async=1&fmt=3&ctc_id=CAIVAgAAAB0CAAAA&ct_cookie_present=false&sscte=1&crd=&is_vtc=1&ocp_id=2Bs6YqXhKJiPgAfxz7uoCw&cid=CAQSKQCNIrLMUWUQdq8HcNeFYJq4B2hFMTr32tjaL5fdR4XWuKfgOI8DS0fr&eitems=ChEI8OflkQYQ3c3fr9aTwNyMARIdAEibTciOpgIc89M8Y_NIzEMd6wLVDsKUOmgE5uQ&random=1869311616&resp=GooglemKTybQhCsO HTTP 302
https://www.google.de/pagead/1p-conversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_ah=1200&u_aw=1600&u_cd=24&u_his=2&u_tz=0&u_java=false&u_nplug=3&u_nmime=4&gtm=2wg3e0&sendb=1&ig=1&frm=0&url=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&tiba=Duolingo&auid=2009500855.1647975385&hn=www.googleadservices.com&async=1&fmt=3&ctc_id=CAIVAgAAAB0CAAAA&ct_cookie_present=false&sscte=1&crd=&is_vtc=1&ocp_id=2Bs6YqXhKJiPgAfxz7uoCw&cid=CAQSKQCNIrLMUWUQdq8HcNeFYJq4B2hFMTr32tjaL5fdR4XWuKfgOI8DS0fr&eitems=ChEI8OflkQYQ3c3fr9aTwNyMARIdAEibTciOpgIc89M8Y_NIzEMd6wLVDsKUOmgE5uQ&random=1869311616&resp=GooglemKTybQhCsO&ipr=y&prhg=0

Request Chain 67

https://adservice.google.de/ddm/fls/i/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy HTTP 302
https://9814127.fls.doubleclick.net/ddm/fls/r/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy

83 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2 200 Primary Request efficacy Show response
www.duolingo.com/ 8 KB
3 KB 322ms
118ms Document
text/html 3.85.58.25
AMAZON-AES

General

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Show headers Download Go to

Full URL

https://www.duolingo.com/efficacy

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

3.85.58.25 Ashburn, United States, ASN14618 (AMAZON-AES, US),

Reverse DNS

ec2-3-85-58-25.compute-1.amazonaws.com

Software

duo-api /

Resource Hash

ff8623d3c80dcc8ced4ec251770399a47b450941908acf9c57f55747ba40a2d8

Security Headers

Name	Value
X-Frame-Options	SAMEORIGIN

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Accept-Language: de-DE,de;q=0.9

Response headers

date: Tue, 22 Mar 2022 18:56:23 GMT
content-type: text/html; charset=UTF-8
server: duo-api
no-retry: 1
surrogate-control: no-store
expires: 0
pragma: no-cache
cache-control: no-store, no-cache, must-revalidate, proxy-revalidate
x-frame-options: SAMEORIGIN
x-tid: ffff65c7623a1b9e0093
x-ws: UK
x-runtime: 0.01518
content-encoding: gzip
x-envoy-upstream-service-time: 17
x-duo-request-host: www.duolingo.com

GET
H2 200 otSDKStub.js Show response
cdn.cookielaw.org/scripttemplates/ 20 KB
7 KB 54ms
26ms Script
application/javascript 2606:4700::6810:9440
CLOUDFLARENET

General

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Show headers Download Go to

Full URL

https://cdn.cookielaw.org/scripttemplates/otSDKStub.js

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6810:9440 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

8305d86074fdee76ef38a7e264f3ac0bfab4051d8f13625b4bbd5396120b1fe1

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains; preload
X-Content-Type-Options	nosniff

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-ms-blob-type: BlockBlob
date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-content-type-options: nosniff
cf-cache-status: HIT
content-md5: dVKVlVU+J+RB4CMcqf9NTw==
age: 12237
vary: Accept-Encoding
content-length: 6678
x-ms-lease-status: unlocked
last-modified: Mon, 21 Mar 2022 16:16:28 GMT
server: cloudflare
etag: 0x8DA0B5627AA28F7
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=31536000; includeSubDomains; preload
content-type: application/javascript
access-control-allow-origin: *
x-ms-request-id: c6cef100-401e-0015-3c4a-3d1a7f000000
access-control-expose-headers: x-ms-request-id,Server,x-ms-version,Content-Type,Content-Encoding,Last-Modified,ETag,Content-MD5,x-ms-lease-status,x-ms-blob-type,Content-Length,Date,Transfer-Encoding
cache-control: max-age=14400
x-ms-version: 2009-09-19
accept-ranges: bytes
cf-ray: 6f0125a69c7901eb-ZRH

GET
H/1.1 200
OK clear.js Show response
s.lmepbq.com/ag/891112/ 6 KB
3 KB 152ms
30ms Script
text/javascript 52.212.133.238
AMAZON-02

General

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Show headers Download Go to

Full URL

https://s.lmepbq.com/ag/891112/clear.js?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

HTTP/1.1

Security

TLS 1.2, ECDHE_ECDSA, AES_128_GCM

Server

52.212.133.238 Dublin, Ireland, ASN16509 (AMAZON-02, US),

Reverse DNS

ec2-52-212-133-238.eu-west-1.compute.amazonaws.com

Software

Resource Hash

c93303bf3cdeeae69ce7432cd44d06635f03c063d313d64f2c18eaab3f5e379e

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

Pragma: no-cache
Date: Tue, 22 Mar 2022 18:56:23 GMT
Content-Encoding: gzip
Accept-Ch: Viewport-Width, Viewport-Height, Width, DPR, RTT, ECT, Device-Memory, Downlink, Save-Data
Vary: *
Content-Type: text/javascript; charset=utf-8
Cache-Control: no-cache, no-store, must-revalidate, no-transform, private, max-age=0
Strict-Transport-Security: max-age=31536000; includeSubDomains
Timing-Allow-Origin: *
Content-Length: 2663
Expires: 0

GET
H2 200 manifest-47cb6f38.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 10 KB
6 KB 6ms
6ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/manifest-47cb6f38.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 12bd88e1a7e7287a91298cd555e993a7a918f387252c7a45c2f113f45481ece2

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Thu, 17 Mar 2022 20:57:24 GMT
content-encoding: gzip
last-modified: Thu, 17 Mar 2022 20:46:02 GMT
server: AmazonS3
age: 424741
etag: "98832731e2dec139ae5d44f14c404e73"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 5339
x-amz-cf-id: auPdtZ8_VjcOv2zv_uQ3OzTUINJscPNQWkdxmRGLhnHcta_GLbqzww==

GET
H2 200 2867-154c4916.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 203 KB
70 KB 8ms
7ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/2867-154c4916.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 742be7d511d82b8653d98ac6869af70fa843c9c19df91f8aea8bc5976b0966fc

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Thu, 17 Mar 2022 17:42:24 GMT
content-encoding: gzip
last-modified: Thu, 17 Mar 2022 16:35:16 GMT
server: AmazonS3
age: 436441
etag: "430636d328b14656dc0148edbfd83dcc"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 70976
x-amz-cf-id: 638oawk0tKhG_k4Ej8DROLWhZfPD0s2VbxLOfyPx5joxDoTPgiN5Jw==

GET
H2 200 de-a9fb9fbe.js Show response
d35aaqx5ub95lt.cloudfront.net/js/strings/ 7 KB
2 KB 14ms
13ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/strings/de-a9fb9fbe.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: f0f2e060019459e3c3967037f08e3967b072033dd59973e34d9e69db35895f9a

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Thu, 30 Sep 2021 21:01:22 GMT
content-encoding: gzip
last-modified: Thu, 30 Sep 2021 20:53:51 GMT
server: AmazonS3
age: 14939703
etag: "1cc644b3e84e3bc7b3d1fc7624800d9e"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 2135
x-amz-cf-id: OiCO0LquN655GfuZSHcQ_CthKSz0zz61AQmWyI0guII7rdhCd79aMg==

GET
H2 200 9819-ec6ded7c.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 178 KB
54 KB 14ms
13ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/9819-ec6ded7c.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 0bf935ad25fb7e24ea438810e1242eba147fcd7920d782042b6aac5df3113e5b

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Thu, 17 Mar 2022 17:00:57 GMT
content-encoding: gzip
last-modified: Thu, 17 Mar 2022 16:35:17 GMT
server: AmazonS3
age: 438928
etag: "f331f38ef3f30a251dca09e7b53eb5e3"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 55273
x-amz-cf-id: ROmEYiwFga65TR43I9Xr-H1DalCMFXdzLWvvRr3hXbKJMX1RJHLo1Q==

GET
H2 200 en-1644a48e.js Show response
d35aaqx5ub95lt.cloudfront.net/js/strings/ 226 B
580 B 16ms
15ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/strings/en-1644a48e.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 1d5484074d844addc76cc620a18d6eab5e5e585f58b5ab7921be19398203a10b

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 29 Sep 2021 21:04:28 GMT
content-encoding: gzip
last-modified: Wed, 29 Sep 2021 20:54:43 GMT
server: AmazonS3
age: 15025917
etag: "5d4afd4d5093bf9c36d0c8fccef8ba4a"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 183
x-amz-cf-id: gGSsaYrIA8Vcm_lwJLIy6MZuknF6YfKzlaphjYGY1KR7-XWglK4rug==

GET
H2 200 8028-92ef2df9.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 29 KB
11 KB 17ms
15ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/8028-92ef2df9.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: de17b253b9e062cbbfb0dd0ae0ff188fb0603f7e416dc6bc6305ea913b0b5f1e

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 23 Feb 2022 21:57:31 GMT
content-encoding: gzip
last-modified: Wed, 23 Feb 2022 21:52:07 GMT
server: AmazonS3
age: 2321934
etag: "5550a4e5e09826edf6473ab3ce8e5988"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 10845
x-amz-cf-id: Hb_iXlsCQKRqXvCP9KOAKX8BzGaY20po4cLP8Tq7seDoyMRxMckkZw==

GET
H2 200 polyfills-3a87979e.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 450 B
666 B 17ms
15ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/polyfills-3a87979e.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 3ea86159118f3fcbd765c1f47353b8bee4f45a248afbfdd33b006941cdf5de65

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 23 Feb 2022 21:57:32 GMT
content-encoding: gzip
last-modified: Wed, 23 Feb 2022 21:52:07 GMT
server: AmazonS3
age: 2321933
etag: "9432b1e5f24ff0765785715f97ca0b76"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 270
x-amz-cf-id: Jqvn5myNnLfuSzCr5pW3-YFk8ueclfvj3-ZUIEyXaBSb81ePcn7H1w==

GET
H2 200 1400-62105cbb.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 468 KB
147 KB 17ms
16ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: ca4d04b69e8049230e877d2c7b087fed22b609ca2ff41038d0acea773e84819a

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 02 Mar 2022 22:26:23 GMT
content-encoding: gzip
last-modified: Wed, 02 Mar 2022 22:17:40 GMT
server: AmazonS3
age: 1715402
etag: "9177bd91a105aa80f6c3e7f3aea1a04f"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 150288
x-amz-cf-id: N79IIRVKwvck-Ph3uB3nCjNdoyjjqVYQQg2fzCqjteikntahEMuG7w==

GET
H2 200 app-44e47ccb.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 654 KB
177 KB 22ms
20ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/app-44e47ccb.js
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: c8ca9f844b0cbf457b53acf61c583169a60b29c80fc22e99708225875dd36dfc

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Mon, 21 Mar 2022 16:56:30 GMT
content-encoding: gzip
last-modified: Mon, 21 Mar 2022 16:28:41 GMT
server: AmazonS3
age: 93595
etag: "4dc253e2743d87201bdfb366d48b5e52"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 181160
x-amz-cf-id: V2Tg0Ocje99-73Gj-cBtzgxQi3UoRl-FL8LNKZnDT0f2Rk4L_cFF8Q==

GET
H2 200 1400-5c69976b.css
d35aaqx5ub95lt.cloudfront.net/css/ 21 KB
5 KB 43ms
6ms Stylesheet
text/css 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/css/1400-5c69976b.css
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 4d6757ee9174b7025cabaf9f68ef73588691225f893e60bbfa4bfa15b3f27392

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 23 Feb 2022 21:57:31 GMT
content-encoding: gzip
last-modified: Wed, 23 Feb 2022 21:51:59 GMT
server: AmazonS3
age: 2321934
etag: "9c9638a5dbb27abbfa32a8b715a61bf7"
x-cache: Hit from cloudfront
content-type: text/css
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 4909
x-amz-cf-id: lQI_ZL5M62_tzJXy70lWZXzg2BqJvzIftcQgUTYK8S6L6_euW42Dsw==

GET
H2 200 app-ceb16427.css
d35aaqx5ub95lt.cloudfront.net/css/ 73 KB
15 KB 43ms
7ms Stylesheet
text/css 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/css/app-ceb16427.css
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: bb57d27946bc804ffa727d7fd1f8b7d6f6b8446166200c85f6c2f23eb86715d8

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 16 Mar 2022 21:02:18 GMT
content-encoding: gzip
last-modified: Wed, 16 Mar 2022 20:53:42 GMT
server: AmazonS3
age: 510847
etag: "21d3d6094504688d07d87c2ac6ec002e"
x-cache: Hit from cloudfront
content-type: text/css
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 15364
x-amz-cf-id: isfb-nebLPCDCcCkJo90IOKxU-mo3UMjyEfFvQx5qiEHhddx1kPvoQ==

GET
H2 200 55a7f100-001e-4085-87ec-1a6d522f7d67.json Show response
cdn.cookielaw.org/consent/55a7f100-001e-4085-87ec-1a6d522f7d67/ 4 KB
2 KB 53ms
26ms XHR
application/x-javascript 2606:4700::6810:9440
CLOUDFLARENET

General

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Full URL

https://cdn.cookielaw.org/consent/55a7f100-001e-4085-87ec-1a6d522f7d67/55a7f100-001e-4085-87ec-1a6d522f7d67.json

Requested by

Host: cdn.cookielaw.org
URL: https://cdn.cookielaw.org/scripttemplates/otSDKStub.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6810:9440 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

03b4a2a6278c3ec110f684dcd3a7f46bffb145163064f08b56e9ca78106ebdb4

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains; preload
X-Content-Type-Options	nosniff

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-ms-blob-type: BlockBlob
date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-content-type-options: nosniff
cf-cache-status: HIT
content-md5: /LHNnXuD2SCKt9JY9h/2XQ==
age: 12208
vary: Accept-Encoding
content-length: 1625
x-ms-lease-status: unlocked
last-modified: Tue, 16 Nov 2021 21:17:08 GMT
server: cloudflare
etag: 0x8D9A94672655B21
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=31536000; includeSubDomains; preload
content-type: application/x-javascript
access-control-allow-origin: *
x-ms-request-id: 8c00d502-001e-005d-4a44-db28e2000000
access-control-expose-headers: x-ms-request-id,Server,x-ms-version,Content-Type,Content-Encoding,Cache-Control,Last-Modified,ETag,Content-MD5,x-ms-lease-status,x-ms-blob-type,Content-Length,Date,Transfer-Encoding
cache-control: public, max-age=14400
x-ms-version: 2009-09-19
accept-ranges: bytes
cf-ray: 6f0125a70d5e0225-ZRH
expires: Tue, 22 Mar 2022 22:56:24 GMT

GET
H2 200 location Show response
geolocation.onetrust.com/cookieconsentpub/v1/geo/ 182 B
457 B 98ms
70ms XHR
application/json 2606:4700:10::6814:b844
CLOUDFLARENET

General

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Show headers Download Go to

Full URL

https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location

Requested by

Host: cdn.cookielaw.org
URL: https://cdn.cookielaw.org/scripttemplates/otSDKStub.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:10::6814:b844 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

fd9308db31181fde13aca740757dcb439baf71d731011a87da483a28faae444f

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains; preload

Request headers

accept: application/json
Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
server: cloudflare
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
vary: Accept-Encoding
access-control-allow-methods: GET, OPTIONS
content-type: application/json
access-control-allow-origin: *
strict-transport-security: max-age=31536000; includeSubDomains; preload
cf-ray: 6f0125a78d110200-ZRH
access-control-allow-headers: Content-Type

GET gcm-service-worker.js
www.duolingo.com/ Frame 0
0

POST
H/1.1 200
OK postback Show response
s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 121ms
30ms XHR
text/plain 52.212.133.238
AMAZON-02

General

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Show headers Download Go to

Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?oz_pl=1&ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&_x=1
Requested by: Host: s.lmepbq.com
URL: https://s.lmepbq.com/ag/891112/clear.js?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_ECDSA, AES_128_GCM
Server: 52.212.133.238 Dublin, Ireland, ASN16509 (AMAZON-02, US),
Reverse DNS: ec2-52-212-133-238.eu-west-1.compute.amazonaws.com
Software: /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:23 GMT
Timing-Allow-Origin: *
Content-Length: 0
Vary: Origin

GET
H/1.1 200
OK main.js Show response
s.lmepbq.com/2/2.52.0/ 156 KB
49 KB 31ms
31ms Script
text/javascript 52.212.133.238
AMAZON-02

General

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Show headers Download Go to

Full URL

https://s.lmepbq.com/2/2.52.0/main.js

Requested by

Host: s.lmepbq.com
URL: https://s.lmepbq.com/ag/891112/clear.js?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc

Protocol

HTTP/1.1

Security

TLS 1.2, ECDHE_ECDSA, AES_128_GCM

Server

52.212.133.238 Dublin, Ireland, ASN16509 (AMAZON-02, US),

Reverse DNS

ec2-52-212-133-238.eu-west-1.compute.amazonaws.com

Software

Resource Hash

ebc1809c917b61781cda24334f55c7010d9bf8986b99ea3f59d049e78d491910

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

Date: Tue, 22 Mar 2022 18:56:23 GMT
Content-Encoding: br
Accept-Ch: Viewport-Width, Viewport-Height, Width, DPR, RTT, ECT, Device-Memory, Downlink, Save-Data
Vary: Origin, Accept-Encoding
Content-Type: text/javascript; charset=utf-8
Cache-Control: public, no-transform, immutable, max-age=999999999
Strict-Transport-Security: max-age=31536000; includeSubDomains
Timing-Allow-Origin: *
Content-Length: 49733
Expires: Fri, 28 Nov 2053 10:29:40 GMT

GET
H2 200 gtm.js Show response
www.googletagmanager.com/ 170 KB
57 KB 38ms
15ms Script
application/javascript 2a00:1450:4001:82f::2008
GOOGLE

General

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Full URL

https://www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/app-44e47ccb.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:82f::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Google Tag Manager /

Resource Hash

7d7bba1b9686bcd834d5309754c58e5d31c345dd146aa26a384a8c66076d694a

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains
X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: br
vary: Accept-Encoding
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 57753
x-xss-protection: 0
last-modified: Tue, 22 Mar 2022 18:00:00 GMT
server: Google Tag Manager
strict-transport-security: max-age=31536000; includeSubDomains
content-type: application/javascript; charset=UTF-8
access-control-allow-origin: *
cache-control: private, max-age=900
access-control-allow-credentials: true
access-control-allow-headers: Cache-Control
expires: Tue, 22 Mar 2022 18:56:24 GMT

GET
H2 200 2401-432436cd.css
d35aaqx5ub95lt.cloudfront.net/css/ 4 KB
2 KB 7ms
7ms Stylesheet
text/css 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/css/2401-432436cd.css
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/manifest-47cb6f38.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: aa33b05538f3148491e6d9c9acb1b05c91089a74eb2ca95e9d4cf1006bb8b7cf

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Tue, 21 Dec 2021 01:11:30 GMT
content-encoding: gzip
last-modified: Sat, 18 Dec 2021 10:29:56 GMT
server: AmazonS3
age: 7926295
etag: "96968bc7c8c0dcda94fedf0917de52bb"
x-cache: Hit from cloudfront
content-type: text/css
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 1252
x-amz-cf-id: nKvvYCteHL3TSd-9Ok61USGU8aIrqHNiE7PldRlEQ0oM5VuZkzHj8w==

GET
H2 200 2401-07c40f2c.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 8 KB
3 KB 7ms
7ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/2401-07c40f2c.js
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/manifest-47cb6f38.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 3e42411367c577997befdf387c1588a5bbc8ca0ccffdf55fade97da89f181591

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Mon, 21 Mar 2022 15:01:08 GMT
content-encoding: gzip
last-modified: Mon, 21 Mar 2022 13:58:03 GMT
server: AmazonS3
age: 100517
etag: "e2913a26b42c8af46fff37910e9fe5a3"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 2379
x-amz-cf-id: G_wA6ZDK6Sxkta2q6OmFn7_9LXyKfbiZAHbMQYQUlv2Y_h3hG3trWw==

GET
H2 200 7332-50b5f7bc.css
d35aaqx5ub95lt.cloudfront.net/css/ 464 B
703 B 6ms
6ms Stylesheet
text/css 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/css/7332-50b5f7bc.css
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/manifest-47cb6f38.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: e1e7d76c6c3aa8220f4df4bcfa577f73fb205e0f3e4de9cb2b61f7579c523c46

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 19 Jan 2022 22:27:12 GMT
content-encoding: gzip
last-modified: Wed, 19 Jan 2022 22:03:07 GMT
server: AmazonS3
age: 5344153
etag: "9fe905f85bc555d9aa002c1f845ed0e2"
x-cache: Hit from cloudfront
content-type: text/css
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 317
x-amz-cf-id: Hm3AZHLpn1t5MWdfkLA8BsqGjhQoJcJJ6Onh8MJT5jnzwdN2yv9TWQ==

GET
H2 200 7332-3380d887.js Show response
d35aaqx5ub95lt.cloudfront.net/js/ 4 KB
2 KB 7ms
6ms Script
application/javascript 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to

Full URL: https://d35aaqx5ub95lt.cloudfront.net/js/7332-3380d887.js
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/manifest-47cb6f38.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: fcabe3bb0e1f2cc0473ca0f12628595056a18d158cfb26959a4a9b5dee141105

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Wed, 16 Mar 2022 21:02:18 GMT
content-encoding: gzip
last-modified: Wed, 16 Mar 2022 20:53:49 GMT
server: AmazonS3
age: 510847
etag: "910c16bb9172c0e642a15e1968f42105"
x-cache: Hit from cloudfront
content-type: application/javascript
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 1570
x-amz-cf-id: JSJqgjDaI89dFVdj-X5LJJfcXj5MzsGyFhEzO9uA02AlKdW3Vo-aZQ==

POST
H2 200 batch Show response
excess.duolingo.com/ 34 B
312 B 190ms
188ms XHR
text/plain 44.193.53.124
AMAZON-AES

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Full URL: https://excess.duolingo.com/batch
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 44.193.53.124 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-44-193-53-124.compute-1.amazonaws.com
Software: Jetty(9.2.z-SNAPSHOT) /
Resource Hash: 26503ab2f8fd7184b8f272f63557e8d0b61c9d3cb6ee042e37a4e541dc2eb615

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-type: application/json

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
accept-encoding: gzip, identity
server: Jetty(9.2.z-SNAPSHOT)
access-control-max-age: 3600
access-control-allow-methods: POST, GET, OPTIONS
content-type: text/plain; charset=ISO-8859-1
access-control-allow-origin: *
access-control-allow-headers: Content-Type, Access-Control-Allow-Headers, Authorization
content-length: 34

GET
H2 200 otBannerSdk.js Show response
cdn.cookielaw.org/scripttemplates/6.16.0/ 374 KB
83 KB 19ms
18ms Script
application/javascript 2606:4700::6810:9440
CLOUDFLARENET

General

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Full URL

https://cdn.cookielaw.org/scripttemplates/6.16.0/otBannerSdk.js

Requested by

Host: cdn.cookielaw.org
URL: https://cdn.cookielaw.org/scripttemplates/otSDKStub.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6810:9440 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

353bcd41d11cc5a2bcb6763c269e41ac785c06ace29ac10053bb7c0fa3bf1ecf

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains; preload
X-Content-Type-Options	nosniff

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-ms-blob-type: BlockBlob
date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-content-type-options: nosniff
cf-cache-status: HIT
content-md5: dGCXlveaBvO7BI0nfZKP+g==
age: 13380490
vary: Accept-Encoding
content-length: 85065
x-ms-lease-status: unlocked
last-modified: Thu, 06 May 2021 19:31:04 GMT
server: cloudflare
etag: 0x8D910C57D52F14C
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=31536000; includeSubDomains; preload
content-type: application/javascript
access-control-allow-origin: *
x-ms-request-id: bcc806bd-a01e-017d-436c-c4027b000000
access-control-expose-headers: x-ms-request-id,Server,x-ms-version,Content-Type,Content-Encoding,Last-Modified,ETag,Content-MD5,x-ms-lease-status,x-ms-blob-type,Content-Length,Date,Transfer-Encoding
cache-control: max-age=14400
x-ms-version: 2009-09-19
accept-ranges: bytes
cf-ray: 6f0125a83f0f01eb-ZRH

OPTIONS
H2 200 batch
excess.duolingo.com/ Frame 0
0 301ms
98ms Preflight 44.193.53.124
AMAZON-AES

General

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Show headers Download Go to

Full URL: https://excess.duolingo.com/batch
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 44.193.53.124 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-44-193-53-124.compute-1.amazonaws.com
Software: Jetty(9.2.z-SNAPSHOT) /
Resource Hash

Request headers

Accept: */*
Access-Control-Request-Method: POST
Access-Control-Request-Headers: content-type
Origin: https://www.duolingo.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Sec-Fetch-Mode: cors

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-length: 0
access-control-allow-origin: *
access-control-allow-methods: POST, GET, OPTIONS
access-control-allow-headers: Content-Type, Access-Control-Allow-Headers, Authorization
access-control-max-age: 3600
accept-encoding: gzip, identity
allow: GET, HEAD, POST, TRACE, OPTIONS
server: Jetty(9.2.z-SNAPSHOT)

OPTIONS
H2 200 config
stories.duolingo.com/api2/ Frame 0
0 318ms
100ms Preflight 18.215.194.130
AMAZON-AES

General

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Show headers Download Go to

Full URL

https://stories.duolingo.com/api2/config?fields=courses&_=1647975384352

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

18.215.194.130 Ashburn, United States, ASN14618 (AMAZON-AES, US),

Reverse DNS

ec2-18-215-194-130.compute-1.amazonaws.com

Software

duo-api /

Resource Hash

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1 ; mode=block

Request headers

Accept: */*
Access-Control-Request-Method: GET
Access-Control-Request-Headers: x-amzn-trace-id,x-requested-with
Origin: https://www.duolingo.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Sec-Fetch-Mode: cors

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-length: 0
vary: Origin,Access-Control-Request-Method,Access-Control-Request-Headers
access-control-allow-origin: https://www.duolingo.com
access-control-allow-methods: GET,HEAD,POST
access-control-allow-headers: x-amzn-trace-id, x-requested-with
access-control-allow-credentials: true
access-control-max-age: 1728000
cache-control: no-cache, no-store, max-age=0, must-revalidate
pragma: no-cache
expires: 0
x-content-type-options: nosniff
x-frame-options: DENY
x-xss-protection: 1 ; mode=block
referrer-policy: no-referrer
x-envoy-upstream-service-time: 2
x-duo-request-host: stories-edge.duolingo.com
server: duo-api

GET
H2 404 web.json Show response
brb.duolingo.com/0/ 345 B
769 B 150ms
113ms XHR
text/html 18.66.139.123
AMAZON-02

General

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Full URL: https://brb.duolingo.com/0/web.json?user=0&ts=1647975384&tzoffset=0
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 18.66.139.123 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS: server-18-66-139-123.fra60.r.cloudfront.net
Software: AmazonS3 /
Resource Hash: ad970f615c7fdfad2f265cdffde7523d2a640f84b586287bf3ad24c593fca742

Request headers

Accept: application/json, text/plain, */*
Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
via: 1.1 544049d1dc4d534822b40b9f9c7529da.cloudfront.net (CloudFront)
server: AmazonS3
x-amz-cf-pop: FRA60-P4
vary: Origin,Access-Control-Request-Headers,Access-Control-Request-Method
access-control-allow-methods: GET, HEAD
content-type: text/html; charset=utf-8
access-control-allow-origin: https://www.duolingo.com
access-control-max-age: 3000
access-control-allow-credentials: true
x-cache: Error from cloudfront
content-length: 345
x-amz-cf-id: GeKCvOpJNkjOA-zP5Tx-7spvWEOpWhRLsjdgv_0pmgzfAm2xDxjuXw==

GET
H2 200 config Show response
www.duolingo.com/2017-06-30/ 4 KB
2 KB 122ms
122ms XHR
application/json 3.85.58.25
AMAZON-AES

General

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Show headers Download Go to

Full URL

https://www.duolingo.com/2017-06-30/config?fields=ageRestrictionLimit,clientExperiments%7Bnurr_web_change_mobile_course_picker_v2,plus_web_code_redemption_redesign_v2,seo_dictionary_bread_crumbs%7D,courses,dictionaryHost,featureFlags,ipCountry,speechHost,xpLevelCutoffs&_=1647975384352

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

3.85.58.25 Ashburn, United States, ASN14618 (AMAZON-AES, US),

Reverse DNS

ec2-3-85-58-25.compute-1.amazonaws.com

Software

duo-api /

Resource Hash

82ed68387639e4521286d4d48c31cdd878144af25410737e38bb38296f00103e

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	SAMEORIGIN
X-Xss-Protection	1 ; mode=block

Request headers

Accept: application/json, text/plain, */*
Referer: https://www.duolingo.com/efficacy
X-Requested-With: XMLHttpRequest
Accept-Language: de-DE,de;q=0.9
X-Amzn-Trace-Id: User=0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-content-type-options: nosniff
x-ws: UK
x-tid: ffff65a4623a1b7f011a
surrogate-control: no-store
x-duo-request-host: www.duolingo.com
x-envoy-upstream-service-time: 21
content-length: 1417
x-xss-protection: 1 ; mode=block
x-runtime: 0.01167
referrer-policy: no-referrer
server: duo-api
no-retry: 1
x-frame-options: SAMEORIGIN
vary: Origin,Access-Control-Request-Method,Access-Control-Request-Headers
content-type: application/json
pragma: no-cache
cache-control: no-store, no-cache, must-revalidate, proxy-revalidate
expires: 0

GET
H2 200 config Show response
stories.duolingo.com/api2/ 1013 B
1 KB 106ms
102ms XHR
application/json 3.85.58.25
AMAZON-AES

General

Check archive.org

Show headers Download Go to

Full URL

https://stories.duolingo.com/api2/config?fields=courses&_=1647975384352

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

3.85.58.25 Ashburn, United States, ASN14618 (AMAZON-AES, US),

Reverse DNS

ec2-3-85-58-25.compute-1.amazonaws.com

Software

duo-api /

Resource Hash

2fe25d0832dfb2b0fac19ac6cdb4b2e2e5b8abf113850bb2844e4361e05cc7ca

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	1 ; mode=block

Request headers

Accept: application/json, text/plain, */*
Referer: https://www.duolingo.com/
X-Requested-With: XMLHttpRequest
Accept-Language: de-DE,de;q=0.9
X-Amzn-Trace-Id: User=0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
x-content-type-options: nosniff
x-duo-request-host: stories-edge.duolingo.com
x-envoy-upstream-service-time: 3
content-length: 1013
x-xss-protection: 1 ; mode=block
pragma: no-cache
referrer-policy: no-referrer
server: duo-api
x-frame-options: DENY
vary: Origin,Access-Control-Request-Method,Access-Control-Request-Headers
content-type: application/json
access-control-allow-origin: https://www.duolingo.com
cache-control: no-cache, no-store, max-age=0, must-revalidate
access-control-allow-credentials: true
expires: 0

POST
H2 200 tracking-status Show response
www.duolingo.com/2017-06-30/ 2 B
1 KB 122ms
122ms XHR
application/json 3.85.58.25
AMAZON-AES

General

Check archive.org

Show headers Download Go to

Full URL

https://www.duolingo.com/2017-06-30/tracking-status

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

3.85.58.25 Ashburn, United States, ASN14618 (AMAZON-AES, US),

Reverse DNS

ec2-3-85-58-25.compute-1.amazonaws.com

Software

duo-api /

Resource Hash

44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a

Security Headers

Name	Value
X-Frame-Options	SAMEORIGIN

Request headers

Accept: application/json, text/plain, */*
Referer: https://www.duolingo.com/efficacy
X-Requested-With: XMLHttpRequest
Accept-Language: de-DE,de;q=0.9
X-Amzn-Trace-Id: User=0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: application/json;charset=UTF-8

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
x-ws: UK
access-control-allow-origin: https://www.duolingo.com
x-tid: ffff65d2623a1ba8009c
surrogate-control: no-store
x-duo-request-host: www.duolingo.com
x-envoy-upstream-service-time: 24
content-length: 2
x-runtime: 0.02035
server: duo-api
no-retry: 1
x-frame-options: SAMEORIGIN
access-control-max-age: 1728000
access-control-allow-methods: GET, POST, OPTIONS, PATCH, PUT, DELETE
content-type: application/json; charset=UTF-8
pragma: no-cache
access-control-expose-headers: Cache-Control, Content-Length, Content-Type, Expires, No-Retry, Pragma, Surrogate-Control
cache-control: no-store, no-cache, must-revalidate, proxy-revalidate
access-control-allow-credentials: true
access-control-allow-headers: , accept, accept-encoding, accept-language, authorization, cache-control, connection, content-type, dnt, host, if-modified-since, keep-alive, user-agent, x-requested-with
expires: 0

GET
H2 200 5b117228254f9a9d8c7f541734f18225.svg
d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/ 13 KB
6 KB 8ms
7ms Image
image/svg+xml 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/5b117228254f9a9d8c7f541734f18225.svg
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: bb361902586a2ba76e8fea66f5f808c8d1fedfb0a6001e3c9a83cc9bba3d6780

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Tue, 21 Dec 2021 20:44:14 GMT
content-encoding: gzip
last-modified: Sat, 18 Dec 2021 10:30:00 GMT
server: AmazonS3
age: 7855931
etag: "a56548d94daf60cc39b7273b845114fe"
x-cache: Hit from cloudfront
content-type: image/svg+xml
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 5425
x-amz-cf-id: 3n_ip8Np4d8m2_MgSMzA5twZeCL4LRdJ9Ulf80LPi3OD8dfdyNMZrQ==

GET
H2 200 edbfe6adab0b5053fb305cbb00fe2a50.svg
d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/ 211 KB
64 KB 9ms
8ms Image
image/svg+xml 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/edbfe6adab0b5053fb305cbb00fe2a50.svg
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: d4879e9e8faa99d8b1950b5ca384266b6d26e3b1c7bc835fd2ca12de333da9ed

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Mon, 30 Aug 2021 16:56:39 GMT
content-encoding: gzip
last-modified: Mon, 30 Aug 2021 14:36:52 GMT
server: AmazonS3
age: 17632786
etag: "56c3b16115d694e04c88314360909ac9"
x-cache: Hit from cloudfront
content-type: image/svg+xml
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 64636
x-amz-cf-id: -GcC6-G7Bzl8K8QconBsmSaia8X0RJ9XjSegTPH9i1s5nskBBmC49g==

GET
H2 200 260128a5150b411f4b7e871393c5b229.svg
d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/ 44 KB
14 KB 9ms
8ms Image
image/svg+xml 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to Show image

Full URL: https://d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/260128a5150b411f4b7e871393c5b229.svg
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 1c0d89b4ddcbb8721e525e993aabd3328b02dc94e6d6e50c233e26f964e1032d

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Mon, 30 Aug 2021 16:56:39 GMT
content-encoding: gzip
last-modified: Mon, 30 Aug 2021 14:36:52 GMT
server: AmazonS3
age: 17632786
etag: "b716b583a72a3ada44c599e238bd446c"
x-cache: Hit from cloudfront
content-type: image/svg+xml
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 13819
x-amz-cf-id: 3Wqhs0OOOX2H0MY4ngToq83o9YCHwU74Xe_HLh-waG-8T3k3O6nQ1Q==

GET
H2 200 fb8766f1951f0eabf951e3faf2d3acac.svg
d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/ 37 KB
12 KB 9ms
9ms Image
image/svg+xml 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to Show image

Full URL: https://d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/fb8766f1951f0eabf951e3faf2d3acac.svg
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software: AmazonS3 /
Resource Hash: 92943d1ed44bf5e4e0d5d6453e1ae4b19d8e37e7920afd8002a439bf5a9cf590

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-amz-server-side-encryption: AES256
date: Tue, 21 Dec 2021 20:44:14 GMT
content-encoding: gzip
last-modified: Sat, 18 Dec 2021 10:30:00 GMT
server: AmazonS3
age: 7855931
etag: "6fbad9d78c80191adefb6e6f6dd4c7b7"
x-cache: Hit from cloudfront
content-type: image/svg+xml
via: 1.1 bb5a1c03f2335d92378a3e68542733da.cloudfront.net (CloudFront)
cache-control: max-age=315360000
x-amz-cf-pop: FRA56-P6
accept-ranges: bytes
content-length: 11762
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GET
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5 KB 10ms
10ms Image
image/svg+xml 2600:9000:2490:c000:7:60cd:e840:21
AMAZON-02

General

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Show headers Download Go to Show image

Full URL: https://d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/af82f9d238f519d342d60668531f2b09.svg
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
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Security: TLS 1.3, , AES_128_GCM
Server: 2600:9000:2490:c000:7:60cd:e840:21 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

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date: Wed, 19 Jan 2022 18:25:57 GMT
content-encoding: gzip
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server: AmazonS3
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x-cache: Hit from cloudfront
content-type: image/svg+xml
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AMAZON-02

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Full URL: https://d35aaqx5ub95lt.cloudfront.net/vendor/b6dc898912fd8734b959ad9c17590a8b.otf
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Wed, 02 Feb 2022 07:34:20 GMT
content-encoding: gzip
vary: Origin
age: 4188124
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront
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AMAZON-02

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Full URL: https://d35aaqx5ub95lt.cloudfront.net/vendor/b391a1740855adb49e1bfc5fbe836c5c.woff2
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
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Request headers

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Response headers

date: Mon, 03 Jan 2022 19:49:11 GMT
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40 KB 26ms
13ms Font
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AMAZON-02

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Full URL: https://d35aaqx5ub95lt.cloudfront.net/vendor/c1ebba64155e95ff69b9b3efb15c219a.woff2
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
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Request headers

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Response headers

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OPTIONS
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AMAZON-AES

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Full URL: https://excess.duolingo.com/batch
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
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Resource Hash

Request headers

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Response headers

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15ms XHR
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AMAZON-02

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Full URL: https://d35aaqx5ub95lt.cloudfront.net/images/efficacyPage/ca0cf0527df8d498e464ab1afa14fb78.svg
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
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Request headers

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Response headers

date: Tue, 21 Dec 2021 20:44:14 GMT
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vary: Origin
age: 7855931
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x-cache: Hit from cloudfront
content-length: 1826
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POST
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312 B 268ms
266ms XHR
text/plain 44.193.53.124
AMAZON-AES

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Full URL: https://excess.duolingo.com/batch
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
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Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
accept-encoding: gzip, identity
server: Jetty(9.2.z-SNAPSHOT)
access-control-max-age: 3600
access-control-allow-methods: POST, GET, OPTIONS
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POST
H/1.1 200
OK postback Show response
s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 30ms
30ms XHR
text/plain 52.212.133.238
AMAZON-02

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Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?oz_pl=1&ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&_x=1
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Request headers

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Response headers

Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:23 GMT
Timing-Allow-Origin: *
Content-Length: 0
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POST
H/1.1 200
OK postback Show response
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145 B 30ms
30ms XHR
text/plain 52.212.133.238
AMAZON-02

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Show headers Download Go to

Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&sid=ASiFtHQBEAe_hInz&oz_sc=def751c2b5b3a8498deb9eb8&oz_df=1647975384433&oz_l=138&cv=3
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Protocol: HTTP/1.1
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:23 GMT
Timing-Allow-Origin: *
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GET
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20 KB 26ms
23ms Fetch
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CLOUDFLARENET

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Full URL

https://cdn.cookielaw.org/consent/55a7f100-001e-4085-87ec-1a6d522f7d67/e43d2735-b44f-43da-ae8a-a4f881b04152/de.json

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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Reverse DNS

Software

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Resource Hash

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Security Headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

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content-encoding: gzip
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server: cloudflare
etag: 0x8D9A946755E826E
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accept-ranges: bytes
cf-ray: 6f0125a918b60225-ZRH
expires: Tue, 22 Mar 2022 22:56:24 GMT

GET
H2 200 analytics.js Show response
www.google-analytics.com/ 49 KB
20 KB 30ms
7ms Script
text/javascript 2a00:1450:4001:808::200e
GOOGLE

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Full URL

https://www.google-analytics.com/analytics.js

Requested by

Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:808::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

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Resource Hash

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Security Headers

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Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

strict-transport-security: max-age=10886400; includeSubDomains; preload
content-encoding: gzip
x-content-type-options: nosniff
last-modified: Tue, 02 Nov 2021 17:39:06 GMT
server: Golfe2
age: 3098
date: Tue, 22 Mar 2022 18:04:46 GMT
vary: Accept-Encoding
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cross-origin-resource-policy: cross-origin
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content-length: 20006
expires: Tue, 22 Mar 2022 20:04:46 GMT

GET
H2

200

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9814127.fls.doubleclick.net/ Frame 3AE8
Redirect Chain

https://9814127.fls.doubleclick.net/activityi;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy?
https://9814127.fls.doubleclick.net/activityi;dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duo...

486 B
563 B

21ms
18ms

Document
text/html

142.250.185.230
GOOGLE

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Full URL

https://9814127.fls.doubleclick.net/activityi;dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy?

Requested by

Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.185.230 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

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Software

cafe /

Resource Hash

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Security Headers

Name	Value
Strict-Transport-Security	max-age=21600
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Accept-Language: de-DE,de;q=0.9
Referer: about:blank

Response headers

p3p: policyref="https://googleads.g.doubleclick.net/pagead/gcn_p3p_.xml", CP="CURa ADMa DEVa TAIo PSAo PSDo OUR IND UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"
timing-allow-origin: *
cross-origin-resource-policy: cross-origin
date: Tue, 22 Mar 2022 18:56:24 GMT
expires: Fri, 01 Jan 1990 00:00:00 GMT
cache-control: no-cache, must-revalidate
strict-transport-security: max-age=21600
content-type: text/html; charset=UTF-8
pragma: no-cache
x-content-type-options: nosniff
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server: cafe
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x-xss-protection: 0
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Redirect headers

p3p: policyref="https://googleads.g.doubleclick.net/pagead/gcn_p3p_.xml", CP="CURa ADMa DEVa TAIo PSAo PSDo OUR IND UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"
timing-allow-origin: *
cross-origin-resource-policy: cross-origin
date: Tue, 22 Mar 2022 18:56:24 GMT
pragma: no-cache
expires: Fri, 01 Jan 1990 00:00:00 GMT
cache-control: no-cache, must-revalidate
follow-only-when-prerender-shown: 1
strict-transport-security: max-age=21600
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content-type: text/html; charset=UTF-8
x-content-type-options: nosniff
server: cafe
content-length: 0
x-xss-protection: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"

GET
H2 200 conversion_async.js Show response
www.googleadservices.com/pagead/ 39 KB
15 KB 41ms
19ms Script
text/javascript 142.250.185.162
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googleadservices.com/pagead/conversion_async.js

Requested by

Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

142.250.185.162 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra16s51-in-f2.1e100.net

Software

cafe /

Resource Hash

00359d552170386e0f9dc362a2a48ad8da908f6263810b28eb26348073b70bee

Security Headers

Name	Value
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X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-content-type-options: nosniff
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cross-origin-resource-policy: cross-origin
content-disposition: attachment; filename="f.txt"
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content-length: 14884
x-xss-protection: 0
server: cafe
etag: 4198181851688197673
vary: Accept-Encoding
content-type: text/javascript; charset=UTF-8
cache-control: private, max-age=3600
timing-allow-origin: *
expires: Tue, 22 Mar 2022 18:56:24 GMT

GET
H2 200 fbevents.js Show response
connect.facebook.net/en_US/ 99 KB
26 KB 25ms
8ms Script
application/x-javascript 2a03:2880:f02d:100:face:b00c:0:3
FACEBOOK

General

Check archive.org

Show headers Download Go to

Full URL

https://connect.facebook.net/en_US/fbevents.js

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a03:2880:f02d:100:face:b00c:0:3 Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),

Reverse DNS

Software

Resource Hash

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Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; preload; includeSubDomains
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

strict-transport-security: max-age=31536000; preload; includeSubDomains
content-encoding: gzip
x-content-type-options: nosniff
document-policy: force-load-at-top
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=86400,h3-29=":443"; ma=86400
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x-fb-trip-id: 917726464
x-frame-options: DENY
date: Tue, 22 Mar 2022 18:56:24 GMT
vary: Accept-Encoding
content-type: application/x-javascript; charset=utf-8
cache-control: public, max-age=1200
x-fb-rlafr: 0
priority: u=3,i
expires: Sat, 01 Jan 2000 00:00:00 GMT

GET
H2 200 adalyser.js Show response
c0.adalyser.com/ 35 KB
12 KB 147ms
60ms Script
application/javascript 63.35.104.241
AMAZON-02

General

Check archive.org

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Full URL: https://c0.adalyser.com/adalyser.js?cid=duolingo
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 63.35.104.241 Dublin, Ireland, ASN16509 (AMAZON-02, US),
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Software: / Express
Resource Hash: c1b356f3f76ac3ce3f19997f63fa181cb9d05cd531eb1ee612ce69a2a57fa56f

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-powered-by: Express
etag: "60b9cf4ef4ac6dab5294025f3c443ba3cca92451"
p3p: CP="ADMa OUR IND DSP NON COR"
access-control-allow-origin: *
cache-control: public, max-age=21600
access-control-allow-credentials: true
content-type: application/javascript
access-control-allow-headers: origin, content-type, accept
content-length: 12183

GET
H/1.1

200
OK

cnv
cnv.event.prod.bidr.io/log/
Redirect Chain

https://pixel.pointmediatracker.com/kpi?c=duolingo&kpi=visit&tag_id=111&fpc=f5ae6f1d-0aa6-4ea0-898e-f7eccd3b1de6&utm_source=undefined&utm_medium=undefined&utm_campaign=undefined&gtmcb=2079264373
https://cnv.event.prod.bidr.io/log/cnv?tag_id=111&buzz_key=blisspoint&value=duolingo&segment_key=&order=b60e0dc0-82ef-4f54-bfd8-b2d58f19212b.null&ord=3521190465272145969
https://cnv.event.prod.bidr.io/log/cnv?tag_id=111&buzz_key=blisspoint&value=duolingo&segment_key=&order=b60e0dc0-82ef-4f54-bfd8-b2d58f19212b.null&ord=3521190465272145969&_bee_ppp=1

43 B
793 B

31ms
31ms

Image
image/gif

52.31.156.128
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://cnv.event.prod.bidr.io/log/cnv?tag_id=111&buzz_key=blisspoint&value=duolingo&segment_key=&order=b60e0dc0-82ef-4f54-bfd8-b2d58f19212b.null&ord=3521190465272145969&_bee_ppp=1

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

HTTP/1.1

Server

52.31.156.128 Dublin, Ireland, ASN16509 (AMAZON-02, US),

Reverse DNS

ec2-52-31-156-128.eu-west-1.compute.amazonaws.com

Software

nginx /

Resource Hash

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Security Headers

Name	Value
Strict-Transport-Security	max-age=2592000; includeSubDomains

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

pragma: no-cache
Date: Tue, 22 Mar 2022 18:56:25 GMT
Server: nginx
strict-transport-security: max-age=2592000; includeSubDomains
p3p: CP="This is not a P3P policy! See https://beeswax.com/privacy for more info."
cache-control: no-cache, must-revalidate
Connection: keep-alive
content-type: image/gif
Content-Length: 43
expires: Fri, 01 Jan 1990 00:00:00 GMT

Redirect headers

location: https://cnv.event.prod.bidr.io/log/cnv?tag_id=111&buzz_key=blisspoint&value=duolingo&segment_key=&order=b60e0dc0-82ef-4f54-bfd8-b2d58f19212b.null&ord=3521190465272145969&_bee_ppp=1
Date: Tue, 22 Mar 2022 18:56:25 GMT
Server: nginx
Connection: keep-alive
Content-Length: 0
strict-transport-security: max-age=2592000; includeSubDomains

GET
H2 200 otFlat.json Show response
cdn.cookielaw.org/scripttemplates/6.16.0/assets/ 12 KB
3 KB 22ms
21ms Fetch
application/json 2606:4700::6810:9440
CLOUDFLARENET

General

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Show headers Download Go to

Full URL

https://cdn.cookielaw.org/scripttemplates/6.16.0/assets/otFlat.json

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700::6810:9440 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

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Security Headers

Name	Value
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X-Content-Type-Options	nosniff

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

x-ms-blob-type: BlockBlob
date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-content-type-options: nosniff
cf-cache-status: HIT
content-md5: DKM3/i+7h7Fs8cEMor3s2A==
age: 13380490
vary: Accept-Encoding
content-length: 2938
x-ms-lease-status: unlocked
last-modified: Thu, 06 May 2021 19:30:47 GMT
server: cloudflare
etag: 0x8D910C572DA86E8
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
strict-transport-security: max-age=31536000; includeSubDomains; preload
content-type: application/json
access-control-allow-origin: *
x-ms-request-id: e09f8120-901e-003e-116c-c46ec7000000
access-control-expose-headers: x-ms-request-id,Server,x-ms-version,Content-Type,Content-Encoding,Last-Modified,ETag,Content-MD5,x-ms-lease-status,x-ms-blob-type,Content-Length,Date,Transfer-Encoding
cache-control: max-age=14400
x-ms-version: 2009-09-19
accept-ranges: bytes
cf-ray: 6f0125a9896f0225-ZRH

POST
H2 200 collect Show response
www.google-analytics.com/j/ 2 B
208 B 15ms
14ms XHR
text/plain 2a00:1450:4001:808::200e
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.google-analytics.com/j/collect?v=1&_v=j96&a=1282096491&t=pageview&_s=1&dl=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&ul=en-us&de=UTF-8&dt=Duolingo&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&_u=YEBAAEABAAAAAC~&jid=1105073473&gjid=762681921&cid=1515447560.1647975385&tid=UA-21595814-1&_gid=598485155.1647975385&_r=1&gtm=2wg3e0TX6Z97C&did=i5iSjo&z=1979529942

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:808::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Golfe2 /

Resource Hash

de3246094525b21a870fc7d2a67490d0132535c6fa5993755c549f1a9d1bd8af

Security Headers

Name	Value
X-Content-Type-Options	nosniff

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:24 GMT
x-content-type-options: nosniff
last-modified: Sun, 17 May 1998 03:00:00 GMT
server: Golfe2
content-type: text/plain
access-control-allow-origin: https://www.duolingo.com
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 2
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
BLOB 200
OK 19f3c08d-4918-4ccf-aa5f-03440a5945f6
https://www.duolingo.com/ Frame 0CA9 185 B
0 Other
application/javascript

General

Check archive.org

Show headers Download Go to

Full URL: blob:https://www.duolingo.com/19f3c08d-4918-4ccf-aa5f-03440a5945f6
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: BLOB
Server: -, , ASN (),
Reverse DNS
Software: /
Resource Hash: 848fe19ed492948709b881f504ce2eb6274baa694606ca88eb9b2990a2460caf

Request headers

Accept-Language: de-DE,de;q=0.9
Referer
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

Content-Length: 185
Content-Type: application/javascript

GET
H3 200 1735692093320310 Show response
connect.facebook.net/signals/config/ 308 KB
87 KB 18ms
8ms Script
application/x-javascript 2a03:2880:f02d:100:face:b00c:0:3
FACEBOOK

General

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Show headers Download Go to

Full URL

https://connect.facebook.net/signals/config/1735692093320310?v=2.9.57&r=stable

Requested by

Host: connect.facebook.net
URL: https://connect.facebook.net/en_US/fbevents.js

Protocol

Security

QUIC, , AES_128_GCM

Server

2a03:2880:f02d:100:face:b00c:0:3 Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),

Reverse DNS

Software

Resource Hash

ecb0b62c9766df1a255af79e468f082f169e5b99f44e9104c8e38bb38711f92d

Security Headers

Name	Value
Content-Security-Policy	default-src * data: blob: 'self';script-src .facebook.com .fbcdn.net .facebook.net .google-analytics.com .google.com 127.0.0.1: 'unsafe-inline' 'unsafe-eval' blob: data: 'self';style-src data: blob: 'unsafe-inline' ;connect-src .facebook.com facebook.com .fbcdn.net .facebook.net wss://.facebook.com: wss://.whatsapp.com: wss://.fbcdn.net attachment.fbsbx.com ws://localhost: blob: *.cdninstagram.com 'self';block-all-mixed-content;upgrade-insecure-requests;
Strict-Transport-Security	max-age=31536000; preload; includeSubDomains
X-Content-Type-Options	nosniff
X-Frame-Options	DENY
X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

content-security-policy: default-src * data: blob: 'self';script-src *.facebook.com *.fbcdn.net *.facebook.net *.google-analytics.com *.google.com 127.0.0.1:* 'unsafe-inline' 'unsafe-eval' blob: data: 'self';style-src data: blob: 'unsafe-inline' *;connect-src *.facebook.com facebook.com *.fbcdn.net *.facebook.net wss://*.facebook.com:* wss://*.whatsapp.com:* wss://*.fbcdn.net attachment.fbsbx.com ws://localhost:* blob: *.cdninstagram.com 'self';block-all-mixed-content;upgrade-insecure-requests;
content-encoding: gzip
x-content-type-options: nosniff
document-policy: force-load-at-top
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=86400,h3-29=":443"; ma=86400
content-length: 89482
x-xss-protection: 0
pragma: public
x-fb-debug: F9BY54k5BszFnv18GOFA0jhu7xeRgtqCpR0Bvlqdi4RlU0e9JNA+TGyht6kssJ16WfZLI9vFCra1459VfQFgGw==
cross-origin-embedder-policy-report-only: require-corp;report-to="coep_report"
cross-origin-opener-policy: same-origin-allow-popups
x-frame-options: DENY
date: Tue, 22 Mar 2022 18:56:24 GMT
strict-transport-security: max-age=31536000; preload; includeSubDomains
report-to: {"max_age":86400,"endpoints":[{"url":"https:\/\/www.facebook.com\/browser_reporting\/?minimize=0"}],"group":"coep_report"}
content-type: application/x-javascript; charset=utf-8
vary: Accept-Encoding
cache-control: public, max-age=1200
x-fb-rlafr: 0
priority: u=3,i
expires: Sat, 01 Jan 2000 00:00:00 GMT

GET
H3 200 / Show response
www.googleadservices.com/pagead/conversion/397119219/ 2 KB
1 KB 43ms
21ms Script
text/javascript 142.250.185.162
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://www.googleadservices.com/pagead/conversion/397119219/?random=1647975384623&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_ah=1200&u_aw=1600&u_cd=24&u_his=2&u_tz=0&u_java=false&u_nplug=3&u_nmime=4&gtm=2wg3e0&sendb=1&ig=1&frm=0&url=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&tiba=Duolingo&auid=2009500855.1647975385&hn=www.googleadservices.com&bttype=purchase&async=1&rfmt=3&fmt=4

Requested by

Host: www.googleadservices.com
URL: https://www.googleadservices.com/pagead/conversion_async.js

Protocol

Security

QUIC, , AES_128_GCM

Server

142.250.185.162 , United States, ASN15169 (GOOGLE, US),

Reverse DNS

fra16s51-in-f2.1e100.net

Software

cafe /

Resource Hash

86c0173f609212522901f095d70667176332c31568226d046ad8c96f78ec18d2

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:24 GMT
content-encoding: gzip
x-content-type-options: nosniff
server: cafe
timing-allow-origin: *
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, must-revalidate
cross-origin-resource-policy: cross-origin
content-disposition: attachment; filename="f.txt"
content-type: text/javascript; charset=UTF-8
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 1198
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

POST
H2 200 collect Show response
stats.g.doubleclick.net/j/ 4 B
443 B 67ms
20ms XHR
text/plain 2a00:1450:400c:c06::9b
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j96&tid=UA-21595814-1&cid=1515447560.1647975385&jid=1105073473&gjid=762681921&_gid=598485155.1647975385&_u=YEBAAEAAAAAAAC~&z=1892264760

Requested by

Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:400c:c06::9b Brussels, Belgium, ASN15169 (GOOGLE, US),

Reverse DNS

Software

Golfe2 /

Resource Hash

84e01419bd81f32ac6df0f75f49c604fda9172000a3ae432b3c47b2a6a712d80

Security Headers

Name	Value
Strict-Transport-Security	max-age=10886400; includeSubDomains; preload
X-Content-Type-Options	nosniff

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

pragma: no-cache
strict-transport-security: max-age=10886400; includeSubDomains; preload
x-content-type-options: nosniff
last-modified: Sun, 17 May 1998 03:00:00 GMT
server: Golfe2
date: Tue, 22 Mar 2022 18:56:24 GMT
content-type: text/plain
access-control-allow-origin: https://www.duolingo.com
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 4
expires: Fri, 01 Jan 1990 00:00:00 GMT

POST
H/1.1 200
OK postback Show response
s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 32ms
31ms XHR
text/plain 52.212.133.238
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&sid=ASiFtHQBEAe_hInz&oz_sc=def751c2b5b3a8498deb9eb8&oz_df=1647975384613&oz_l=6757&cv=3
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_ECDSA, AES_128_GCM
Server: 52.212.133.238 Dublin, Ireland, ASN16509 (AMAZON-02, US),
Reverse DNS: ec2-52-212-133-238.eu-west-1.compute.amazonaws.com
Software: /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:23 GMT
Timing-Allow-Origin: *
Content-Length: 0
Vary: Origin

POST
H2 200 batch Show response
excess.duolingo.com/ 34 B
312 B 232ms
231ms XHR
text/plain 44.193.53.124
AMAZON-AES

General

Check archive.org

Show headers Download Go to

Full URL: https://excess.duolingo.com/batch
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 44.193.53.124 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-44-193-53-124.compute-1.amazonaws.com
Software: Jetty(9.2.z-SNAPSHOT) /
Resource Hash: 26503ab2f8fd7184b8f272f63557e8d0b61c9d3cb6ee042e37a4e541dc2eb615

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-type: application/json

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
accept-encoding: gzip, identity
server: Jetty(9.2.z-SNAPSHOT)
access-control-max-age: 3600
access-control-allow-methods: POST, GET, OPTIONS
content-type: text/plain; charset=ISO-8859-1
access-control-allow-origin: *
access-control-allow-headers: Content-Type, Access-Control-Allow-Headers, Authorization
content-length: 34

OPTIONS
H2 200 batch
excess.duolingo.com/ Frame 0
0 98ms
98ms Preflight 44.193.53.124
AMAZON-AES

General

Check archive.org

Show headers Download Go to

Full URL: https://excess.duolingo.com/batch
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 44.193.53.124 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS: ec2-44-193-53-124.compute-1.amazonaws.com
Software: Jetty(9.2.z-SNAPSHOT) /
Resource Hash

Request headers

Accept: */*
Access-Control-Request-Method: POST
Access-Control-Request-Headers: content-type
Origin: https://www.duolingo.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Sec-Fetch-Mode: cors

Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
content-length: 0
access-control-allow-origin: *
access-control-allow-methods: POST, GET, OPTIONS
access-control-allow-headers: Content-Type, Access-Control-Allow-Headers, Authorization
access-control-max-age: 3600
accept-encoding: gzip, identity
allow: GET, HEAD, POST, TRACE, OPTIONS
server: Jetty(9.2.z-SNAPSHOT)

GET
H2 200 dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy Show response
adservice.google.com/ddm/fls/i/ Frame B2A9 485 B
855 B 249ms
78ms Document
text/html 2a00:1450:4001:80f::2002
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://adservice.google.com/ddm/fls/i/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy

Requested by

Host: 9814127.fls.doubleclick.net
URL: https://9814127.fls.doubleclick.net/activityi;dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy?

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:80f::2002 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

cafe /

Resource Hash

f1476f867a0211808d1f82003c5178d1d4daf677f879a5ae9cbe195fba59a026

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Accept-Language: de-DE,de;q=0.9
Referer: https://9814127.fls.doubleclick.net/

Response headers

p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
timing-allow-origin: *
cross-origin-resource-policy: cross-origin
date: Tue, 22 Mar 2022 18:56:24 GMT
expires: Fri, 01 Jan 1990 00:00:00 GMT
cache-control: no-cache, must-revalidate
content-type: text/html; charset=UTF-8
pragma: no-cache
x-content-type-options: nosniff
content-encoding: gzip
server: cafe
content-length: 386
x-xss-protection: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"

GET
H3

200

/
www.google.de/pagead/1p-conversion/397119219/
Redirect Chain

https://googleads.g.doubleclick.net/pagead/viewthroughconversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO...
https://www.google.com/pagead/1p-conversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_...
https://www.google.de/pagead/1p-conversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_a...

42 B
64 B

282ms
37ms

Image
image/gif

2a00:1450:4001:831::2003
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.de/pagead/1p-conversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_ah=1200&u_aw=1600&u_cd=24&u_his=2&u_tz=0&u_java=false&u_nplug=3&u_nmime=4&gtm=2wg3e0&sendb=1&ig=1&frm=0&url=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&tiba=Duolingo&auid=2009500855.1647975385&hn=www.googleadservices.com&async=1&fmt=3&ctc_id=CAIVAgAAAB0CAAAA&ct_cookie_present=false&sscte=1&crd=&is_vtc=1&ocp_id=2Bs6YqXhKJiPgAfxz7uoCw&cid=CAQSKQCNIrLMUWUQdq8HcNeFYJq4B2hFMTr32tjaL5fdR4XWuKfgOI8DS0fr&eitems=ChEI8OflkQYQ3c3fr9aTwNyMARIdAEibTciOpgIc89M8Y_NIzEMd6wLVDsKUOmgE5uQ&random=1869311616&resp=GooglemKTybQhCsO&ipr=y&prhg=0

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

Server

2a00:1450:4001:831::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
Content-Security-Policy	script-src 'none'; object-src 'none'
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:25 GMT
x-content-type-options: nosniff
server: cafe
timing-allow-origin: *
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
content-security-policy: script-src 'none'; object-src 'none'
content-type: image/gif
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

Redirect headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:24 GMT
x-content-type-options: nosniff
server: cafe
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
content-type: image/gif
location: https://www.google.de/pagead/1p-conversion/397119219/?random=2054295280&cv=9&fst=1647975384623&num=1&value=1&label=k0ETCJGBvf0BEPOdrr0B&bg=ffffff&guid=ON&resp=GooglemKTybQhCsO&u_h=1200&u_w=1600&u_ah=1200&u_aw=1600&u_cd=24&u_his=2&u_tz=0&u_java=false&u_nplug=3&u_nmime=4&gtm=2wg3e0&sendb=1&ig=1&frm=0&url=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&tiba=Duolingo&auid=2009500855.1647975385&hn=www.googleadservices.com&async=1&fmt=3&ctc_id=CAIVAgAAAB0CAAAA&ct_cookie_present=false&sscte=1&crd=&is_vtc=1&ocp_id=2Bs6YqXhKJiPgAfxz7uoCw&cid=CAQSKQCNIrLMUWUQdq8HcNeFYJq4B2hFMTr32tjaL5fdR4XWuKfgOI8DS0fr&eitems=ChEI8OflkQYQ3c3fr9aTwNyMARIdAEibTciOpgIc89M8Y_NIzEMd6wLVDsKUOmgE5uQ&random=1869311616&resp=GooglemKTybQhCsO&ipr=y&prhg=0
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
content-security-policy: script-src 'none'; object-src 'none'
timing-allow-origin: *
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 p
c0.adalyser.com/tracking/track/v3/ 43 B
341 B 36ms
32ms Image
image/gif 63.35.104.241
AMAZON-02

General

Check archive.org

Show headers Download Go to Show image

Full URL: https://c0.adalyser.com/tracking/track/v3/p?stm=1647975384737&e=lce1&url=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&cid=duolingo&p=%7B%22et%22%3A1647975384732%2C%22nr%22%3A%22New%22%2C%22cg%22%3A%22Direct%22%2C%22dt%22%3A%22desktop%22%2C%22so%22%3A%22direct%22%2C%22me%22%3A%22none%22%2C%22ca%22%3A%22direct%22%2C%22co%22%3A%22(not%20set)%22%2C%22ke%22%3A%22(not%20set)%22%2C%22vid%22%3A%221%22%2C%22sid%22%3A%22a7cc1443-ae79-4f9b-b427-0f2ac1268c5f%22%2C%22duid%22%3A%222c44f976-9e36-4845-8e9d-330274e62ef3%22%2C%22cw%22%3A1647975384732%7D&userAgent=Mozilla%2F5.0%20(Windows%20NT%2010.0%3B%20Win64%3B%20x64)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F99.0.4844.51%20Safari%2F537.36&domain=www.duolingo.com
Requested by: Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, AES_128_GCM
Server: 63.35.104.241 Dublin, Ireland, ASN16509 (AMAZON-02, US),
Reverse DNS: ec2-63-35-104-241.eu-west-1.compute.amazonaws.com
Software: / Express
Resource Hash: a065920df8cc4016d67c3a464be90099c9d28ffe7c9e6ee3a18f257efc58cbd7

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:24 GMT
x-powered-by: Express
etag: W/"2b-B//0C13UlayirE4cP7xgqg"
p3p: CP="ADMa OUR IND DSP NON COR"
access-control-allow-origin: *
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
content-type: image/gif
access-control-allow-headers: origin, content-type, accept
content-length: 43
expires: 0

GET
H2 200 ga-audiences
www.google.com/ads/ 42 B
501 B 192ms
51ms Image
image/gif 2a00:1450:4001:812::2004
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.com/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j96&tid=UA-21595814-1&cid=1515447560.1647975385&jid=1105073473&_u=YEBAAEAAAAAAAC~&z=1062544069

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:812::2004 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:24 GMT
x-content-type-options: nosniff
server: cafe
timing-allow-origin: *
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
content-type: image/gif
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 ga-audiences
www.google.de/ads/ 42 B
501 B 184ms
43ms Image
image/gif 2a00:1450:4001:831::2003
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.de/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j96&tid=UA-21595814-1&cid=1515447560.1647975385&jid=1105073473&_u=YEBAAEAAAAAAAC~&z=1062544069

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:831::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

cafe /

Resource Hash

ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:24 GMT
x-content-type-options: nosniff
server: cafe
timing-allow-origin: *
p3p: policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
cache-control: no-cache, no-store, must-revalidate
cross-origin-resource-policy: cross-origin
content-type: image/gif
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H2 200 /
www.facebook.com/tr/ 44 B
408 B 128ms
7ms Image
image/gif 2a03:2880:f12d:181:face:b00c:0:25de
FACEBOOK

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.facebook.com/tr/?id=1735692093320310&ev=PageView&dl=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&rl=&if=false&ts=1647975384756&sw=1600&sh=1200&v=2.9.57&r=stable&ec=0&o=29&fbp=fb.1.1647975384753.551829109&it=1647975384620&coo=false&rqm=GET

Requested by

Host: www.duolingo.com
URL: https://www.duolingo.com/efficacy

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a03:2880:f12d:181:face:b00c:0:25de Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),

Reverse DNS

Software

proxygen-bolt /

Resource Hash

10d8d42d73a02ddb877101e72fbfa15a0ec820224d97cedee4cf92d571be5caa

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://www.duolingo.com/
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Response headers

date: Tue, 22 Mar 2022 18:56:24 GMT
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server: proxygen-bolt
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content-length: 44
expires: Tue, 22 Mar 2022 18:56:24 GMT

POST
H/1.1 200
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s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 30ms
30ms XHR
text/plain 52.212.133.238
AMAZON-02

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Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&sid=ASiFtHQBEAe_hInz&oz_sc=def751c2b5b3a8498deb9eb8&oz_df=1647975384832&oz_l=335&cv=3
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Request headers

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Response headers

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GET
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9814127.fls.doubleclick.net/ddm/fls/r/ Frame BC15
Redirect Chain

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https://9814127.fls.doubleclick.net/ddm/fls/r/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duo...

2 KB
917 B

33ms
33ms

Document
text/html

142.250.185.230
GOOGLE

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Full URL

https://9814127.fls.doubleclick.net/ddm/fls/r/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy

Requested by

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Protocol

Security

QUIC, , AES_128_GCM

Server

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Reverse DNS

fra16s53-in-f6.1e100.net

Software

cafe /

Resource Hash

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Request headers

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Accept-Language: de-DE,de;q=0.9
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Response headers

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Redirect headers

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date: Tue, 22 Mar 2022 18:56:25 GMT
pragma: no-cache
expires: Fri, 01 Jan 1990 00:00:00 GMT
cache-control: no-cache, must-revalidate
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content-type: text/html; charset=UTF-8
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POST
H/1.1 200
OK postback Show response
s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 31ms
31ms XHR
text/plain 52.212.133.238
AMAZON-02

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Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&sid=ASiFtHQBEAe_hInz&oz_sc=def751c2b5b3a8498deb9eb8&oz_df=1647975384983&oz_l=4884&cv=3
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Content-Type: text/plain

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Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:24 GMT
Timing-Allow-Origin: *
Content-Length: 0
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POST
H/1.1 200
OK postback Show response
s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 30ms
30ms XHR
text/plain 52.212.133.238
AMAZON-02

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Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&sid=ASiFtHQBEAe_hInz&oz_sc=def751c2b5b3a8498deb9eb8&oz_df=1647975385194&oz_l=369&cv=3
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:24 GMT
Timing-Allow-Origin: *
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GET
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OK c3137dce-30eb-4c43-9bc6-66be2aab2413
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0 Other
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General

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Full URL: blob:https://www.duolingo.com/c3137dce-30eb-4c43-9bc6-66be2aab2413
Requested by: Host: www.duolingo.com
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Reverse DNS
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Request headers

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Referer
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Response headers

Content-Length: 772

GET
H2 200 /
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261 B 89ms
31ms Image
image/gif 15.197.193.217
AMAZON-02

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Full URL: https://insight.adsrvr.org/track/pxl/?adv=h06doen&ct=0:oc83gxd&fmt=3
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Request headers

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Response headers

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GET
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s.pinimg.com/ct/ Frame BC15 1 KB
1 KB 155ms
124ms Script
application/javascript 2a02:26f0:fb:595::1931
AKAMAI-ASN1

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Full URL: https://s.pinimg.com/ct/core.js
Requested by: Host: 9814127.fls.doubleclick.net
URL: https://9814127.fls.doubleclick.net/ddm/fls/r/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy
Protocol: H2
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

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GET
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26 KB 7ms
6ms Script
application/x-javascript 2a03:2880:f02d:100:face:b00c:0:3
FACEBOOK

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Full URL

https://connect.facebook.net/en_US/fbevents.js

Requested by

Host: 9814127.fls.doubleclick.net
URL: https://9814127.fls.doubleclick.net/ddm/fls/r/dc_pre=CNeHltuy2vYCFfpEHQkdn8QEIA;src=9814127;type=hv3;cat=allpa0;ord=9197017211021;gtm=2wg3e0;auiddc=2009500855.1647975385;~oref=https%3A%2F%2Fwww.duolingo.com%2Fefficacy

Protocol

Security

QUIC, , AES_128_GCM

Server

2a03:2880:f02d:100:face:b00c:0:3 Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),

Reverse DNS

Software

Resource Hash

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Security Headers

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Request headers

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Response headers

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expires: Sat, 01 Jan 2000 00:00:00 GMT

GET
H3 200 1735692093320310 Show response
connect.facebook.net/signals/config/ Frame BC15 308 KB
87 KB 7ms
7ms Script
application/x-javascript 2a03:2880:f02d:100:face:b00c:0:3
FACEBOOK

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Full URL

https://connect.facebook.net/signals/config/1735692093320310?v=2.9.57&r=stable

Requested by

Host: connect.facebook.net
URL: https://connect.facebook.net/en_US/fbevents.js

Protocol

Security

QUIC, , AES_128_GCM

Server

2a03:2880:f02d:100:face:b00c:0:3 Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),

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Software

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Request headers

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Response headers

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expires: Sat, 01 Jan 2000 00:00:00 GMT

GET
H3 200 /
www.facebook.com/tr/ Frame BC15 44 B
90 B 19ms
8ms Image
image/gif 2a03:2880:f12d:181:face:b00c:0:25de
FACEBOOK

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Full URL

https://www.facebook.com/tr/?id=1735692093320310&ev=PageView&dl=https%3A%2F%2F9814127.fls.doubleclick.net%2Fddm%2Ffls%2Fr%2Fdc_pre%3DCNeHltuy2vYCFfpEHQkdn8QEIA%3Bsrc%3D9814127%3Btype%3Dhv3%3Bcat%3Dallpa0%3Bord%3D9197017211021%3Bgtm%3D2wg3e0%3Bauiddc%3D2009500855.1647975385%3B~oref%3Dhttps%253A%252F%252Fwww.duolingo.com%252Fefficacy&rl=https%3A%2F%2Fadservice.google.com%2F&if=true&ts=1647975385364&sw=1600&sh=1200&v=2.9.57&r=stable&ec=0&o=30&it=1647975385328&coo=false&rqm=GET

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Protocol

Security

QUIC, , AES_128_GCM

Server

2a03:2880:f12d:181:face:b00c:0:25de Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),

Reverse DNS

Software

proxygen-bolt /

Resource Hash

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Security Headers

Name	Value
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:25 GMT
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server: proxygen-bolt
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priority: u=3,i
expires: Tue, 22 Mar 2022 18:56:25 GMT

POST
H/1.1 200
OK postback Show response
s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 30ms
30ms XHR
text/plain 52.212.133.238
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&sid=ASiFtHQBEAe_hInz&oz_sc=def751c2b5b3a8498deb9eb8&oz_df=1647975385345&oz_l=6310&cv=3
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_ECDSA, AES_128_GCM
Server: 52.212.133.238 Dublin, Ireland, ASN16509 (AMAZON-02, US),
Reverse DNS: ec2-52-212-133-238.eu-west-1.compute.amazonaws.com
Software: /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:24 GMT
Timing-Allow-Origin: *
Content-Length: 0
Vary: Origin

GET
H2 200 main.32155010.js Show response
s.pinimg.com/ct/lib/ Frame BC15 52 KB
18 KB 112ms
112ms Script
application/javascript 2a02:26f0:fb:595::1931
AKAMAI-ASN1

General

Check archive.org

Show headers Download Go to

Full URL: https://s.pinimg.com/ct/lib/main.32155010.js
Requested by: Host: s.pinimg.com
URL: https://s.pinimg.com/ct/core.js
Protocol: H2
Security: TLS 1.3, , AES_256_GCM
Server: 2a02:26f0:fb:595::1931 Frankfurt am Main, Germany, ASN20940 (AKAMAI-ASN1, NL),
Reverse DNS
Software: /
Resource Hash: 83912349e8bc8f0ec2084562dc5e71e06f33a3dfcad4899af80117a7174be14d

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://9814127.fls.doubleclick.net/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

akamai-x-true-ttl: 1209600
content-encoding: gzip
x-cdn: akamai
etag: "fd86de14455274a7c147dc95b77e18e3"
vary: Accept-Encoding, Origin
access-control-allow-methods: GET
content-type: application/javascript
access-control-allow-origin: *
access-control-max-age: 86400
cache-control: max-age=1209600
accept-ranges: bytes
content-length: 18298
access-control-expose-headers: X-CDN

POST
H/1.1 200
OK postback Show response
s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/ 0
145 B 40ms
39ms XHR
text/plain 52.212.133.238
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://s.lmepbq.com/2/2.52.0/891112/ASiFtHQBEAe_hInz/postback?ck=eeb8789c-be45-45e4-a646-4db0d054f7be&dt=8911121635444670059000&mo=0&pd=acc&ci=891112&sid=ASiFtHQBEAe_hInz&oz_sc=def751c2b5b3a8498deb9eb8&oz_df=1647975385516&oz_l=679&cv=3
Requested by: Host: d35aaqx5ub95lt.cloudfront.net
URL: https://d35aaqx5ub95lt.cloudfront.net/js/1400-62105cbb.js
Protocol: HTTP/1.1
Security: TLS 1.2, ECDHE_ECDSA, AES_128_GCM
Server: 52.212.133.238 Dublin, Ireland, ASN16509 (AMAZON-02, US),
Reverse DNS: ec2-52-212-133-238.eu-west-1.compute.amazonaws.com
Software: /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer: https://www.duolingo.com/
Accept-Language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Content-Type: text/plain

Response headers

Access-Control-Allow-Origin: *
Date: Tue, 22 Mar 2022 18:56:24 GMT
Timing-Allow-Origin: *
Content-Length: 0
Vary: Origin

GET
H2 200 / Show response
ct.pinterest.com/user/ Frame BC15 488 B
840 B 101ms
41ms XHR
application/json 2.21.141.169
AKAMAI-AS

General

Check archive.org

Show headers Download Go to

Full URL

https://ct.pinterest.com/user/?tid=2612728976278&pd=%7B%22em%22%3A%2224aba99b2defbb47ee981b4200313f61f3ae31541d8717bdac1e463c838939b0%22%7D&cb=1647975385593

Requested by

Host: s.pinimg.com
URL: https://s.pinimg.com/ct/lib/main.32155010.js

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2.21.141.169 Frankfurt am Main, Germany, ASN16625 (AKAMAI-AS, US),

Reverse DNS

a2-21-141-169.deploy.static.akamaitechnologies.com

Software

Resource Hash

dca1ae93b9c0a595ca6470fda80b9628d455812f8ba2bef0cb29edebe4290633

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000 ; includeSubDomains ; preload

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://9814127.fls.doubleclick.net/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:25 GMT
content-encoding: gzip
vary: Accept-Encoding
x-cdn: akamai
akamai-grn: 0.5d99645f.1647975385.390688c0
x-envoy-upstream-service-time: 3
x-pinterest-rid: 1386701152090749
pin-unauth: dWlkPU1ESTRPVEV5TkRBdE9XWTRaaTAwTkRVMUxUa3paV0V0TnpBeVlqZzJNRFF3TnpRMw
access-control-allow-origin: https://9814127.fls.doubleclick.net
referrer-policy: origin
strict-transport-security: max-age=31536000 ; includeSubDomains ; preload
content-type: application/json; charset=utf-8
pragma: no-cache
access-control-expose-headers: Epik,Pin-Unauth
cache-control: no-cache,no-store,must-revalidate,max-age=0
access-control-allow-credentials: true
content-length: 349
expires: Sat, 01 Jan 2000 00:00:00 GMT

GET
H2 200 /
ct.pinterest.com/v3/ Frame BC15 35 B
334 B 107ms
49ms Image
image/gif 2.21.141.169
AKAMAI-AS

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://ct.pinterest.com/v3/?tid=2612728976278&pd=%7B%22em%22%3A%2224aba99b2defbb47ee981b4200313f61f3ae31541d8717bdac1e463c838939b0%22%7D&event=init&ad=%7B%22loc%22%3A%22https%3A%2F%2F9814127.fls.doubleclick.net%2Fddm%2Ffls%2Fr%2Fdc_pre%3DCNeHltuy2vYCFfpEHQkdn8QEIA%3Bsrc%3D9814127%3Btype%3Dhv3%3Bcat%3Dallpa0%3Bord%3D9197017211021%3Bgtm%3D2wg3e0%3Bauiddc%3D2009500855.1647975385%3B~oref%3Dhttps%253A%252F%252Fwww.duolingo.com%252Fefficacy%22%2C%22ref%22%3A%22https%3A%2F%2Fadservice.google.com%2F%22%2C%22if%22%3Atrue%2C%22sh%22%3A1200%2C%22sw%22%3A1600%2C%22mh%22%3A%2232155010%22%2C%22architecture%22%3A%22%22%2C%22bitness%22%3A%22%22%2C%22brands%22%3A%5B%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22%22%2C%22platformVersion%22%3A%22%22%2C%22uaFullVersion%22%3A%22%22%2C%22ecm_enabled%22%3Afalse%7D&cb=1647975385596

Requested by

Protocol

Security

TLS 1.3, , AES_256_GCM

Server

2.21.141.169 Frankfurt am Main, Germany, ASN16625 (AKAMAI-AS, US),

Reverse DNS

a2-21-141-169.deploy.static.akamaitechnologies.com

Software

Resource Hash

37b17c5135a176a9474521af147d96dfa1fb4ca0f43f00d1400bd1885be3ab9b

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000 ; includeSubDomains ; preload

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://9814127.fls.doubleclick.net/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

pragma: no-cache
date: Tue, 22 Mar 2022 18:56:25 GMT
referrer-policy: origin
x-cdn: akamai
akamai-grn: 0.5d99645f.1647975385.390688ce
strict-transport-security: max-age=31536000 ; includeSubDomains ; preload
content-type: image/gif
access-control-allow-origin: *
cache-control: no-cache,no-store,must-revalidate,max-age=0
x-envoy-upstream-service-time: 4
content-length: 35
x-pinterest-rid: 9089043318754756
expires: Sat, 01 Jan 2000 00:00:00 GMT

GET
H3 200 /
www.facebook.com/tr/ Frame BC15 44 B
88 B 10ms
10ms Image
image/gif 2a03:2880:f12d:181:face:b00c:0:25de
FACEBOOK

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.facebook.com/tr/?id=1735692093320310&ev=Microdata&dl=https%3A%2F%2F9814127.fls.doubleclick.net%2Fddm%2Ffls%2Fr%2Fdc_pre%3DCNeHltuy2vYCFfpEHQkdn8QEIA%3Bsrc%3D9814127%3Btype%3Dhv3%3Bcat%3Dallpa0%3Bord%3D9197017211021%3Bgtm%3D2wg3e0%3Bauiddc%3D2009500855.1647975385%3B~oref%3Dhttps%253A%252F%252Fwww.duolingo.com%252Fefficacy&rl=https%3A%2F%2Fadservice.google.com%2F&if=true&ts=1647975386873&cd[DataLayer]=%5B%5D&cd[Meta]=%7B%22title%22%3A%22%22%7D&cd[OpenGraph]=%7B%7D&cd[Schema.org]=%5B%5D&cd[JSON-LD]=%5B%5D&sw=1600&sh=1200&v=2.9.57&r=stable&ec=1&o=30&it=1647975385328&coo=false&es=automatic&tm=3&rqm=GET

Protocol

Security

QUIC, , AES_128_GCM

Server

2a03:2880:f12d:181:face:b00c:0:25de Frankfurt am Main, Germany, ASN32934 (FACEBOOK, US),

Reverse DNS

Software

proxygen-bolt /

Resource Hash

10d8d42d73a02ddb877101e72fbfa15a0ec820224d97cedee4cf92d571be5caa

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000; includeSubDomains

Request headers

Accept-Language: de-DE,de;q=0.9
Referer: https://9814127.fls.doubleclick.net/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Response headers

date: Tue, 22 Mar 2022 18:56:26 GMT
last-modified: Fri, 21 Dec 2012 00:00:01 GMT
server: proxygen-bolt
strict-transport-security: max-age=31536000; includeSubDomains
content-type: image/gif
cache-control: no-cache, must-revalidate, max-age=0
cross-origin-resource-policy: cross-origin
content-length: 44
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400
priority: u=3,i
expires: Tue, 22 Mar 2022 18:56:26 GMT

Failed requests

These URLs were requested, but there was no response received. You will also see them in the list above.

Domain: www.duolingo.com
URL: https://www.duolingo.com/gcm-service-worker.js

Verdicts & Comments Add Verdict or Comment

98 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

25 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

Domain/Path	Expires	Name / Value
.duolingo.com/	1970-01-20 10:31:51	Name: logged_out_uuid Value: 1420cdd5-11ae-4d5e-9460-92cf26a87d86
.duolingo.com/	1970-01-20 10:31:51	Name: lang Value: de
www.duolingo.com/	1969-12-31 23:59:59	Name: wuuid Value: eeb8789c-be45-45e4-a646-4db0d054f7be
.duolingo.com/	1970-01-20 10:31:51	Name: tsl Value: 1647975384320
.duolingo.com/	1970-01-20 10:31:51	Name: lu Value: https://www.duolingo.com/efficacy
.duolingo.com/	1970-01-20 10:31:51	Name: initial_referrer Value: $direct
.duolingo.com/	1970-01-20 10:31:51	Name: lr Value:
www.duolingo.com/	1970-01-20 01:56:20	Name: AWSALB Value: 7QCSEnQCWPsqwAZDomOLRGkGnSO2llasOKRdJdcNyEhwZOWOw1OaxNfCtnV6ElOxgg9uvFrQXDMT1x2CFPhhWb+qL3V8WNZ5SoUkPRdfPSOG5le3a98UAD8RGqOi
www.duolingo.com/	1970-01-20 01:56:20	Name: AWSALBCORS Value: 7QCSEnQCWPsqwAZDomOLRGkGnSO2llasOKRdJdcNyEhwZOWOw1OaxNfCtnV6ElOxgg9uvFrQXDMT1x2CFPhhWb+qL3V8WNZ5SoUkPRdfPSOG5le3a98UAD8RGqOi
.duolingo.com/	1970-01-20 03:55:51	Name: _gcl_au Value: 1.1.2009500855.1647975385
www.duolingo.com/	1970-01-20 01:56:20	Name: FPC Value: f5ae6f1d-0aa6-4ea0-898e-f7eccd3b1de6
.duolingo.com/	1970-01-20 19:17:27	Name: _ga Value: GA1.2.1515447560.1647975385
.duolingo.com/	1970-01-20 01:47:41	Name: _gid Value: GA1.2.598485155.1647975385
.duolingo.com/	1970-01-20 01:46:15	Name: _gat_UA-21595814-1 Value: 1
.duolingo.com/	1970-01-20 06:05:27	Name: OptanonConsent Value: isGpcEnabled=0&datestamp=Tue+Mar+22+2022+18%3A56%3A24+GMT%2B0000+(GMT)&version=6.16.0&isIABGlobal=false&consentId=1764cdc5-ed16-4c45-8aa9-b3be410495f6&interactionCount=0&landingPath=https%3A%2F%2Fwww.duolingo.com%2Fefficacy&groups=C0001%3A1%2CC0002%3A0%2CC0003%3A0%2CC0004%3A0&hosts=H3%3A1%2CH14%3A1%2CH11%3A0%2CH1%3A0%2CH15%3A0%2CH6%3A0%2CH22%3A0%2CH2%3A0%2CH7%3A0%2CH16%3A0%2CH9%3A0%2CH18%3A0%2CH10%3A0%2CH12%3A0%2CH13%3A0
.duolingo.com/	1970-01-20 01:46:17	Name: __adal_ses Value: *
.duolingo.com/	1970-01-20 19:17:27	Name: __adal_id Value: 2c44f976-9e36-4845-8e9d-330274e62ef3.1647975385.1.1647975385.1647975385.a7cc1443-ae79-4f9b-b427-0f2ac1268c5f
.duolingo.com/	1970-01-20 06:05:27	Name: __adal_ca Value: so%3Ddirect%26me%3Dnone%26ca%3Ddirect%26co%3D%28not%2520set%29%26ke%3D%28not%2520set%29
.duolingo.com/	1970-01-20 01:56:20	Name: __adal_cw Value: 1647975384732
.duolingo.com/	1970-01-20 03:55:51	Name: _fbp Value: fb.1.1647975384753.551829109
.facebook.com/	1970-01-20 03:55:51	Name: fr Value: 0albkRape41hRc0Kh..BiOhvY...1.0.BiOhvY.
.doubleclick.net/	1970-01-20 11:07:51	Name: IDE Value: AHWqTUl35ajOMy13v9m7VQ4phOZSuHJsne7sU4g9n7Ke3ItyKyZ4TYovu_ah3mHo
.pointmediatracker.com/	1970-01-20 10:31:51	Name: c Value: e470d0ea-2521-41f2-803d-937dd0334aff
.bidr.io/	1970-01-20 11:14:48	Name: bito Value: AACevk7EdDgAAAJX5ZpFfg
.bidr.io/	1970-01-20 11:14:48	Name: bitoIsSecure Value: ok

4 Console Messages

A page may trigger messages to the console to be logged. These are often error messages about being unable to load a resource or execute a piece of JavaScript. Sometimes they also provide insight into the technology behind a website.

Source	Level	URL Text
other	warning	URL: https://www.googletagmanager.com/gtm.js?id=GTM-TX6Z97C(Line 40) Message: Unrecognized feature: 'attribution-reporting'.
network	error	URL: https://brb.duolingo.com/0/web.json?user=0&ts=1647975384&tzoffset=0 Message: Failed to load resource: the server responded with a status of 404 ()
worker	error	URL: blob:https://www.duolingo.com/19f3c08d-4918-4ccf-aa5f-03440a5945f6 Message: Mixed Content: The page at 'blob:https://www.duolingo.com/19f3c08d-4918-4ccf-aa5f-03440a5945f6' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint 'chrome-extension://eppiocemhmnlbhjplcgkofciiegomcon/content/safecheck-notification/notification-iframe/index.html'. This request has been blocked; the content must be served over HTTPS.
worker	error	URL: blob:https://www.duolingo.com/19f3c08d-4918-4ccf-aa5f-03440a5945f6 Message: Mixed Content: The page at 'blob:https://www.duolingo.com/19f3c08d-4918-4ccf-aa5f-03440a5945f6' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint 'chrome-extension://cplklnmnlbnpmjogncfgfijoopmnlemp/skin/logo24.png'. This request has been blocked; the content must be served over HTTPS.

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header	Value
X-Frame-Options	SAMEORIGIN

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

9814127.fls.doubleclick.net
adservice.google.com
adservice.google.de
brb.duolingo.com
c0.adalyser.com
cdn.cookielaw.org
cnv.event.prod.bidr.io
connect.facebook.net
ct.pinterest.com
d35aaqx5ub95lt.cloudfront.net
excess.duolingo.com
geolocation.onetrust.com
googleads.g.doubleclick.net
insight.adsrvr.org
pixel.pointmediatracker.com
s.lmepbq.com
s.pinimg.com
stats.g.doubleclick.net
stories.duolingo.com
www.duolingo.com
www.facebook.com
www.google-analytics.com
www.google.com
www.google.de
www.googleadservices.com
www.googletagmanager.com
www.duolingo.com
142.250.185.162
142.250.185.230
15.197.193.217
18.215.194.130
18.66.122.77
18.66.139.123
2.21.141.169
2600:9000:2490:c000:7:60cd:e840:21
2606:4700:10::6814:b844
2606:4700::6810:9440
2a00:1450:4001:808::200e
2a00:1450:4001:80f::2002
2a00:1450:4001:812::2004
2a00:1450:4001:827::2002
2a00:1450:4001:82f::2008
2a00:1450:4001:831::2003
2a00:1450:400c:c06::9b
2a02:26f0:fb:595::1931
2a03:2880:f02d:100:face:b00c:0:3
2a03:2880:f12d:181:face:b00c:0:25de
3.85.58.25
44.193.53.124
52.212.133.238
52.31.156.128
63.35.104.241
00359d552170386e0f9dc362a2a48ad8da908f6263810b28eb26348073b70bee
03b4a2a6278c3ec110f684dcd3a7f46bffb145163064f08b56e9ca78106ebdb4
0bf935ad25fb7e24ea438810e1242eba147fcd7920d782042b6aac5df3113e5b
10d8d42d73a02ddb877101e72fbfa15a0ec820224d97cedee4cf92d571be5caa
12bd88e1a7e7287a91298cd555e993a7a918f387252c7a45c2f113f45481ece2
1c0d89b4ddcbb8721e525e993aabd3328b02dc94e6d6e50c233e26f964e1032d
1d5484074d844addc76cc620a18d6eab5e5e585f58b5ab7921be19398203a10b
26503ab2f8fd7184b8f272f63557e8d0b61c9d3cb6ee042e37a4e541dc2eb615
268c10e66f68b07cf0cf98ba81165ce03800410d83e71d1ed485bce7fd774d75
2fe25d0832dfb2b0fac19ac6cdb4b2e2e5b8abf113850bb2844e4361e05cc7ca
353bcd41d11cc5a2bcb6763c269e41ac785c06ace29ac10053bb7c0fa3bf1ecf
37b17c5135a176a9474521af147d96dfa1fb4ca0f43f00d1400bd1885be3ab9b
3e18d0e3dd548e9745884578e3cd9f0a492ddbb6f3b797db364b45bb16cadfb3
3e42411367c577997befdf387c1588a5bbc8ca0ccffdf55fade97da89f181591
3ea86159118f3fcbd765c1f47353b8bee4f45a248afbfdd33b006941cdf5de65
43085f1fdfa62116ae996768e70a5c9ef8b70b9b22cc26a09809ff26ec874c09
44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a
452ef6fc67c8a27d0be55c826ddef5aff9deb29533d0f84bd5de08a5c3f50b42
4d6757ee9174b7025cabaf9f68ef73588691225f893e60bbfa4bfa15b3f27392
5216aa370c10648c82e854121a877ec3a02888e2d3e4d25152584cadb8f5fdbf
566b9670644559b5460f2b0e0f217709742edb5f53197b537e48c208fc698853
742be7d511d82b8653d98ac6869af70fa843c9c19df91f8aea8bc5976b0966fc
7d7bba1b9686bcd834d5309754c58e5d31c345dd146aa26a384a8c66076d694a
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www.duolingo.com Open in urlscan Pro 3.85.58.25 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Detected technologies

Page Statistics

83 Requests

94 %HTTPS

52 %IPv6

19 Domains

26 Subdomains

24 IPs

4 Countries

1257 kBTransfer

3964 kBSize

25 Cookies

10 Outgoing links

Redirected requests

83 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

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www.duolingo.com Open in urlscan Pro
3.85.58.25 Public Scan

Screenshot
Live screenshot

Full Image

83
Requests

94 %
HTTPS

52 %
IPv6

19
Domains

26
Subdomains

24
IPs

4
Countries

1257 kB
Transfer

3964 kB
Size

25
Cookies

83 HTTP transactions
0 data transactions